diff --git a/src/sj4mkdic/char.c b/src/sj4mkdic/char.c
index 51df9f7..adeb917 100644
--- a/src/sj4mkdic/char.c
+++ b/src/sj4mkdic/char.c
@@ -133,21 +133,21 @@ void output_knj(FILE* fp, u_char* p, int l) {
 	while(l > 0) {
 		switch(*p & KANJIMODEMASK) {
 		case ZENHIRAASSYUKU:
-			fprintf(fp, "\244\322%d", (*p++ & 0x0f) + 1);
+			fprintf(fp, COMPHIRAGANA, (*p++ & 0x0f) + 1);
 			l--;
 			break;
 		case ZENKATAASSYUKU:
-			fprintf(fp, "\245\253%d", (*p++ & 0x0f) + 1);
+			fprintf(fp, COMPKATAKANA, (*p++ & 0x0f) + 1);
 			l--;
 			break;
 		case KANJIASSYUKU:
-			fprintf(fp, "\260\265%1x", (*p++ & 0x0f));
+			fprintf(fp, COMPKANJI, (*p++ & 0x0f));
 			l--;
 			break;
 		case LEADINGHANKAKU:
 #ifndef USEHANKAKUINDICT
 			l = 0;
-			fprintf(stderr, "\244\252\244\253\244\267\244\244");
+			fprintf(stderr, COMPWRONG);
 #else
 			fputc(*p++, fp);
 			l--;
@@ -162,7 +162,7 @@ void output_knj(FILE* fp, u_char* p, int l) {
 			l--;
 			break;
 		case AIATTRIBUTE:
-			fprintf(fp, "\302\260%1x", (*p++ & 0x0f));
+			fprintf(fp, COMPATTR, (*p++ & 0x0f));
 			l--;
 			fprintf(fp, "%02x", *p++);
 			l--;
diff --git a/src/sj4mkdic/hindo.c b/src/sj4mkdic/hindo.c
index a61a0a1..cc91011 100644
--- a/src/sj4mkdic/hindo.c
+++ b/src/sj4mkdic/hindo.c
@@ -33,6 +33,7 @@
  * $SonyDate: 1994/08/17 01:50:26 $
  */
 
+#include "sj4_dict_const.h"
 #include "sj4_dict_struct.h"
 
 #include "sj4mkdic.h"
@@ -65,7 +66,7 @@ makeassyuku(int num) {
 
 	arec = (AssyukuRec*)Malloc(sizeof(AssyukuRec));
 	if(!arec) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\302\255\244\352\244\336\244\273\244\363\n");
+		fprintf(stderr, MEMNOTENOUGH);
 		exit(1);
 	}
 
@@ -199,12 +200,12 @@ makehindo(u_char* ptr, int len, int alen) {
 
 	hrec = (HindoRec*)Malloc(sizeof(HindoRec));
 	if(!hrec) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\302\255\244\352\244\336\244\273\244\363\n");
+		fprintf(stderr, MEMNOTENOUGH);
 		exit(1);
 	}
 	p = (u_char*)Malloc(len);
 	if(!p) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\302\255\244\352\244\336\244\273\244\363\n");
+		fprintf(stderr, MEMNOTENOUGH);
 		exit(1);
 	}
 	hrec->klen = len;
@@ -256,7 +257,7 @@ set_hindo(u_char* ptr, int len, int alen) {
 
 	if(i) {
 		if(hindo_num >= MAXHINDONUMBER) {
-			fprintf(stderr, "\311\321\305\331\245\306\241\274\245\326\245\353\244\254\244\242\244\325\244\354\244\336\244\267\244\277\n");
+			fprintf(stderr, TABLEOVERFLOW);
 			exit(1);
 		}
 
@@ -456,7 +457,7 @@ end:
 		if(len <= 2) continue;
 		while(len > 0) {
 			if((*p & KANJIMODEMASK) == OFFSETASSYUKU) {
-				printf("\245\252\245\325\245\273\245\303\245\310\260\265\275\314\244\362\264\336\244\340 %d\n", i);
+				printf(CONTAINOFFSETCOMP, i);
 			}
 			j = codesize(*p);
 			len -= j;
diff --git a/src/sj4mkdic/knjcvt.c b/src/sj4mkdic/knjcvt.c
index 586ce1d..986bb82 100644
--- a/src/sj4mkdic/knjcvt.c
+++ b/src/sj4mkdic/knjcvt.c
@@ -61,7 +61,7 @@ make_divrec() {
 
 	p = (DivList*)Malloc(sizeof(DivList));
 	if(!p) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\302\255\244\352\244\336\244\273\244\363\n");
+		fprintf(stderr, MEMNOTENOUGH);
 		exit(1);
 	}
 	p->child = NULL;
@@ -160,7 +160,7 @@ knjofscvt(u_char* ptr, int len, int* ret) {
 
 	p = (u_char*)Malloc(i);
 	if(!p) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 	for(q = p, dl = parent.child; dl; dl = dl->child) {
@@ -190,7 +190,7 @@ knjcvt(u_char* ptr, int len, int* ret) {
 
 	p = (u_char*)Malloc(i);
 	if(!p) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 	for(q = p, dl = parent.child; dl; dl = dl->child) {
@@ -206,7 +206,7 @@ knjcvt(u_char* ptr, int len, int* ret) {
 	free_divlist(parent.child);
 
 	if(i != q - p) {
-		printf("\244\263\244\263\n");
+		printf(CVTHERE);
 		exit(1);
 	}
 
diff --git a/src/sj4mkdic/makelist.c b/src/sj4mkdic/makelist.c
index 892a425..755d90c 100644
--- a/src/sj4mkdic/makelist.c
+++ b/src/sj4mkdic/makelist.c
@@ -33,6 +33,7 @@
  * $SonyDate: 1994/06/03 08:00:39 $
  */
 
+#include "sj4_dict_const.h"
 #include "sj4_dict_struct.h"
 
 #include "sj4mkdic.h"
@@ -153,7 +154,7 @@ makekanji(int* yomi, int* kanji, int* atr, int* len) {
 
 	q = (u_char*)Malloc(pos);
 	if(!q) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 	memcpy(q, ktmp, pos);
@@ -189,7 +190,7 @@ makeyomi(int* yomi) {
 
 	p = (u_char*)Malloc(i);
 	if(!p) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 	memcpy(p, tmp, i);
@@ -203,7 +204,7 @@ make_krec(u_char* kcode, int klen) {
 
 	krec = (KanjiRec*)Malloc(sizeof(KanjiRec));
 	if(!krec) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 
@@ -222,7 +223,7 @@ make_hrec(int hinsi) {
 
 	hrec = (HinsiRec*)Malloc(sizeof(HinsiRec));
 	if(!hrec) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 
@@ -239,7 +240,7 @@ make_drec(u_char* ycode) {
 
 	drec = (DouonRec*)Malloc(sizeof(DouonRec));
 	if(!drec) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277");
+		fprintf(stderr, MEMINSUFFICIENT);
 		exit(1);
 	}
 
@@ -275,12 +276,12 @@ diff_ylen(DouonRec* drec) {
 		}
 
 		if(*p1 == *p2) {
-			fprintf(stderr, "\305\371\244\267\244\244\306\311\244\337\244\316\306\261\262\273\270\354\245\326\245\355\245\303\245\257\244\254\244\242\244\353\n");
+			fprintf(stderr, HOMOPHONEBLOCK);
 			output_yomi(stderr, dprev->yptr);
 			fputc('\n', stderr);
 			exit(1);
 		} else if(*p1 > *p2) {
-			fprintf(stderr, "\306\311\244\337\244\316\275\347\275\370\244\254\244\252\244\253\244\267\244\244\n");
+			fprintf(stderr, WRONGREADORDER);
 			output_yomi(stderr, dprev->yptr);
 			fputc('\n', stderr);
 			output_yomi(stderr, drec->yptr);
@@ -384,7 +385,7 @@ start:
 
 		return;
 	} else if(douon_ptr == NULL) {
-		fprintf(stderr, "\243\261\306\261\262\273\270\354\245\326\245\355\245\303\245\257\244\254\302\347\244\255\244\271\244\256\244\336\244\271\n");
+		fprintf(stderr, TOOLARGEBLOCK);
 		exit(1);
 	}
 
@@ -476,11 +477,11 @@ void makelist(int* yomi, int* kanji, int hinsi, int* atr) {
 		for(krec = hrec->krec; krec; krec = krec->knext) {
 			if((krec->klen == klen) &&
 			   !memcmp(krec->kptr, kcode, klen)) {
-				fprintf(stderr, "\306\261\260\354\244\316\275\317\270\354\244\254\302\270\272\337\244\267\244\277\n");
-				fprintf(stderr, "\t\306\311\244\337:");
+				fprintf(stderr, DUPECOMBINEDWORD);
+				fprintf(stderr, DUPECOMBINEDWORDREAD);
 				output_int(stderr, yomi);
 				fprintf(stderr, "\n");
-				fprintf(stderr, "\t\264\301\273\372:");
+				fprintf(stderr, DUPECOMBINEDWORDKANJI);
 				output_int(stderr, kanji);
 				fprintf(stderr, "\n");
 
diff --git a/src/sj4mkdic/memory.c b/src/sj4mkdic/memory.c
index 4569c2f..d715859 100644
--- a/src/sj4mkdic/memory.c
+++ b/src/sj4mkdic/memory.c
@@ -33,6 +33,7 @@
  * $SonyDate: 1994/06/03 08:00:42 $
  */
 
+#include "sj4_dict_const.h"
 #include "sj4mkdic.h"
 
 void* Malloc(unsigned size) {
@@ -40,7 +41,7 @@ void* Malloc(unsigned size) {
 
 	p = malloc(size);
 	if(p == NULL) {
-		fprintf(stderr, "\245\341\245\342\245\352\244\254\263\316\312\335\244\307\244\255\244\336\244\273\244\363\244\307\244\267\244\277\241\243\n");
+		fprintf(stderr, MEMALLOCFAILED);
 		exit(1);
 	}
 	return p;
diff --git a/src/sj4mkdic/offset.c b/src/sj4mkdic/offset.c
index c74e371..61fddbd 100644
--- a/src/sj4mkdic/offset.c
+++ b/src/sj4mkdic/offset.c
@@ -33,6 +33,7 @@
  * $SonyDate: 1994/08/17 01:50:26 $
  */
 
+#include "sj4_dict_const.h"
 #include "sj4_dict_struct.h"
 
 #include "sj4mkdic.h"
@@ -85,7 +86,7 @@ void set_ofsrec(u_char* ptr, int len, int ofs) {
 
 	if(i) {
 		if(ofsrec_num >= MAXOFFSETNUMBER) {
-			fprintf(stderr, "\245\252\245\325\245\273\245\303\245\310\241\246\245\306\241\274\245\326\245\353\244\254\244\242\244\325\244\354\244\336\244\267\244\277\n");
+			fprintf(stderr, OFFSETTABLEOVERFLOW);
 			exit(1);
 		}
 
@@ -144,6 +145,6 @@ real_ofsrec(u_char* ptr) {
 		if((*p)->offset == ofs)
 			return *p;
 
-	fprintf(stderr, "real_ofsrec() \244\307\260\333\276\357\244\312\276\365\302\326 %x\n", ofs);
+	fprintf(stderr, OFFSETILLEGALSTATE, ofs);
 	exit(1);
 }
diff --git a/src/sj4mkdic/sj4_dict_const.h b/src/sj4mkdic/sj4_dict_const.h
index 2650315..e27e7b6 100644
--- a/src/sj4mkdic/sj4_dict_const.h
+++ b/src/sj4mkdic/sj4_dict_const.h
@@ -90,6 +90,20 @@
 #define TOOMANYJOSI "Too many particles"
 #define NODATAINMAIN "Non-existent in main dictionary"
 #define TOOMANYTARGET "Specify only one verb"
+#define MEMNOTENOUGH "Not enough memory\n"
+#define TABLEOVERFLOW "Frequency table overflowed\n"
+#define CONTAINOFFSETCOMP "Contains offset compression %d\n"
+#define MEMINSUFFICIENT "Memory was insufficient"
+#define CVTHERE "here\n"
+#define MEMALLOCFAILED "Could not allocate memory.\n"
+#define HOMOPHONEBLOCK "There is a homophone block with the same reading\n"
+#define WRONGREADORDER "The reading order is wrong\n"
+#define TOOLARGEBLOCK "One homophone block is too large\n"
+#define DUPECOMBINEDWORD "A duplicate compound word exists\n"
+#define DUPECOMBINEDWORDREAD "\tReading:"
+#define DUPECOMBINEDWORDKANJI "\tKanji:"
+#define OFFSETTABLEOVERFLOW "Offset table overflowed\n"
+#define OFFSETILLEGALSTATE "Abnormal state in real_ofsrec() %x\n"
 #else
 #define ILLEGALFORMAT "\245\325\245\251\241\274\245\336\245\303\245\310\244\254\260\333\276\357\244\307\244\271"
 #define TOOLONGYOMI "\306\311\244\337\312\270\273\372\316\363\244\254\304\271\244\271\244\256\244\336\244\271"
@@ -107,8 +121,27 @@
 #define TOOMANYJOSI "\275\365\273\354\244\316\277\364\244\254\302\277\244\271\244\256\244\336\244\271"
 #define NODATAINMAIN "\245\341\245\244\245\363\274\255\275\361\244\313\302\270\272\337\244\267\244\336\244\273\244\363"
 #define TOOMANYTARGET "\311\312\273\354\244\362\243\261\244\304\273\330\304\352\244\267\244\306\244\257\244\300\244\265\244\244"
+#define MEMNOTENOUGH "\245\341\245\342\245\352\244\254\302\255\244\352\244\336\244\273\244\363\n"
+#define TABLEOVERFLOW "\311\321\305\331\245\306\241\274\245\326\245\353\244\254\244\242\244\325\244\354\244\336\244\267\244\277\n"
+#define CONTAINOFFSETCOMP "\245\252\245\325\245\273\245\303\245\310\260\265\275\314\244\362\264\336\244\340 %d\n"
+#define MEMINSUFFICIENT "\245\341\245\342\245\352\244\254\311\324\302\255\244\267\244\336\244\267\244\277"
+#define CVTHERE "\244\263\244\263\n"
+#define MEMALLOCFAILED "\245\341\245\342\245\352\244\254\263\316\312\335\244\307\244\255\244\336\244\273\244\363\244\307\244\267\244\277\241\243\n"
+#define HOMOPHONEBLOCK "\305\371\244\267\244\244\306\311\244\337\244\316\306\261\262\273\270\354\245\326\245\355\245\303\245\257\244\254\244\242\244\353\n"
+#define WRONGREADORDER "\306\311\244\337\244\316\275\347\275\370\244\254\244\252\244\253\244\267\244\244\n"
+#define TOOLARGEBLOCK "\243\261\306\261\262\273\270\354\245\326\245\355\245\303\245\257\244\254\302\347\244\255\244\271\244\256\244\336\244\271\n"
+#define DUPECOMBINEDWORD "\306\261\260\354\244\316\275\317\270\354\244\254\302\270\272\337\244\267\244\277\n"
+#define DUPECOMBINEDWORDREAD "\t\306\311\244\337:"
+#define DUPECOMBINEDWORDKANJI "\t\264\301\273\372:"
+#define OFFSETTABLEOVERFLOW "\245\252\245\325\245\273\245\303\245\310\241\246\245\306\241\274\245\326\245\353\244\254\244\242\244\325\244\354\244\336\244\267\244\277\n"
+#define OFFSETILLEGALSTATE "real_ofsrec() \244\307\260\333\276\357\244\312\276\365\302\326 %x\n"
 #endif
 
+#define COMPHIRAGANA "\244\322%d"
+#define COMPKATAKANA "\245\253%d"
+#define COMPKANJI "\260\265%1x"
+#define COMPWRONG "\244\252\244\253\244\267\244\244"
+#define COMPATTR "\302\260%1x"
 #define HINSITANKAN cnvhinsi((u_char*)"\303\261\264\301")
 
 #define FALSE 0