diff --git a/include/sj4core/sj_kanakan.h b/include/sj4core/sj_kanakan.h
index e45e62d..67df97d 100644
--- a/include/sj4core/sj_kanakan.h
+++ b/include/sj4core/sj_kanakan.h
@@ -122,6 +122,9 @@ RECURS void srchfzk(SJ4_CONTEXT JREC*, u_char*, TypeCnct, int);
 /* fzkyomi.c */
 extern u_char* fzkadr[];
 
+/* getcost.c */
+int getcost(SJ4_CONTEXT u_char*);
+
 /* getkanji.c */
 u_char* getkan_none(u_char*, u_char*, u_char*, int, int);
 u_char* getkan_hira(u_char*, u_char*, u_char*, int, int);
diff --git a/include/sj4core/sj_rename.h b/include/sj4core/sj_rename.h
index d9b1068..f3bb9b9 100644
--- a/include/sj4core/sj_rename.h
+++ b/include/sj4core/sj_rename.h
@@ -104,6 +104,8 @@
 #define fzkcnct Jfzkcnct
 #define srchfzk Jsrchfzk
 
+#define getcost Jgetcost
+
 #define getkan_none Jgetkan_none
 #define getkan_hira Jgetkan_hira
 #define getkan_kata Jgetkan_kata
diff --git a/include/sj4core/sj_struct.h b/include/sj4core/sj_struct.h
index 4c66a1d..0d50525 100644
--- a/include/sj4core/sj_struct.h
+++ b/include/sj4core/sj_struct.h
@@ -43,7 +43,7 @@ typedef struct jiritu {
 	TypeDicOfs     jofsst;
 	TypeDicOfs     jofsed;
 	u_short	       flags;
-	TypeClass class;
+	TypeClass jclass;
 	TypeDicID dicid;
 	u_char	  jlen;
 	TypeGram  hinsi;
@@ -75,6 +75,7 @@ typedef struct kouho {
 	TypeDicOfs offs;
 	TypeStyNum styno;
 	u_char	   rank;
+	u_short	   cost; /* new in SJ4 */
 #if __STDC__
 	unsigned sttfg : 1;
 	unsigned sttkj : 1;
diff --git a/lib/sj4core/cvtkanji.c b/lib/sj4core/cvtkanji.c
index 74e5c74..d142d76 100644
--- a/lib/sj4core/cvtkanji.c
+++ b/lib/sj4core/cvtkanji.c
@@ -96,7 +96,7 @@ void cvtkouho(SJ4_CONTEXT KHREC* krec) {
 
 	clrec = krec->clrec;
 
-	switch(clrec->jnode->class) {
+	switch(clrec->jnode->jclass) {
 	case C_DICT:
 		cvtdict(SJ4_CONTEXT_PASS krec, clrec, FALSE);
 		break;
diff --git a/lib/sj4core/getcost.c b/lib/sj4core/getcost.c
new file mode 100644
index 0000000..f889ad8
--- /dev/null
+++ b/lib/sj4core/getcost.c
@@ -0,0 +1,97 @@
+#include "sj_kanakan.h"
+
+static void getcost_atrb(SJ4_CONTEXT u_char* p, int* len) {
+	*len = 2;
+}
+
+static int getcost_ofs(SJ4_CONTEXT u_char* p, int* len) {
+	*len = 0;
+	return getcost(SJ4_CONTEXT_PASS dicbuf + ((*p & KANJICODEMASK) << 8) + *(p + 1));
+}
+
+static int getcost_knj(SJ4_CONTEXT u_char* p, int* len) {
+	*len = 1;
+	return getcost(SJ4_CONTEXT_PASS askknj[*p & KNJASSYUKUMASK]);
+}
+
+static void getcost_hask(SJ4_CONTEXT u_char* p, int* len) {
+	*len = 1;
+}
+
+static void getcost_kask(SJ4_CONTEXT u_char* p, int* len) {
+	*len = 1;
+}
+
+static void getcost_norm(SJ4_CONTEXT u_char* p, int* len) {
+	*len = codesize(*p);
+}
+
+static void getcost_hira(SJ4_CONTEXT u_char* p, int* len) {
+	u_char ch;
+
+	*len = codesize(*p);
+	ch   = *(p + 1);
+
+	switch(*p) {
+	case 0x24:
+		if(ch >= 0x21 && ch <= 0x73) return;
+		return;
+
+	case 0x25:
+		if(ch >= 0x21 && ch <= 0x76) return;
+		return;
+
+	default:
+		break;
+	}
+}
+
+int getcost(SJ4_CONTEXT u_char* p) {
+	char flg = TRUE;
+	int  i;
+	int  result;
+
+	do {
+		if(p[codesize(*p)] == KANJISTREND) flg = FALSE;
+		switch(*p & KANJIMODEMASK) {
+		case ZENHIRAASSYUKU:
+			getcost_hask(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case ZENKATAASSYUKU:
+			getcost_kask(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case OFFSETASSYUKU:
+			result = getcost_ofs(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case AIATTRIBUTE:
+			getcost_atrb(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case LEADINGHANKAKU:
+			getcost_norm(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case KANJIASSYUKU:
+			result = getcost_knj(SJ4_CONTEXT_PASS p, &i);
+			break;
+
+		case KANAKANCOST:
+			result = ((*p & 0xf) << 8) | *(p + 1);
+			result++;
+			i = 2;
+			break;
+
+		default:
+			getcost_hira(SJ4_CONTEXT_PASS p, &i);
+		}
+
+		if(result) return result - 1;
+
+		p += i;
+	} while(flg);
+
+	return 0;
+}
diff --git a/lib/sj4core/getrank.c b/lib/sj4core/getrank.c
index 14a6c2c..78e896e 100644
--- a/lib/sj4core/getrank.c
+++ b/lib/sj4core/getrank.c
@@ -121,6 +121,16 @@ setnspr(SJ4_CONTEXT KHREC* kptr, STDYIN* sptr) {
 	if(sptr->nmflg && (nrank > keepnm)) nrank = keepnm;
 }
 
+static int sort_kouhotbl(const void* a, const void* b){
+	const KHREC* akh = a;
+	const KHREC* bkh = b;
+
+	if(akh->cost < bkh->cost) return -1;
+	if(akh->cost > bkh->cost) return 1;
+
+	return 0;
+}
+
 static void
 regetrank(SJ4_CONTEXT2) {
 	KHREC* kptr;
@@ -138,6 +148,8 @@ regetrank(SJ4_CONTEXT2) {
 		nkhcount = tmp = 0;
 	}
 
+	qsort(kouhotbl, khcount, sizeof(*kouhotbl), sort_kouhotbl);
+
 	for(count = khcount, kptr = kouhotbl; count--; kptr++) {
 
 		if(!(kptr->rank)) {
diff --git a/lib/sj4core/mkkouho.c b/lib/sj4core/mkkouho.c
index a392eaa..726b33b 100644
--- a/lib/sj4core/mkkouho.c
+++ b/lib/sj4core/mkkouho.c
@@ -68,7 +68,7 @@ getkhtbl(SJ4_CONTEXT CLREC* clrec) {
 
 	jrec = clrec->jnode;
 
-	switch(jrec->class) {
+	switch(jrec->jclass) {
 	case C_DICT:
 		cl_kanji(SJ4_CONTEXT_PASS jrec, clrec);
 		break;
@@ -323,7 +323,7 @@ diffknj(SJ4_CONTEXT JREC* jrec, u_char* ptr, int num) {
 
 		if(jptr->hinsi == TANKANJI) continue;
 
-		if(jptr->class != jrec->class) continue;
+		if(jptr->jclass != jrec->jclass) continue;
 
 		if(jptr->dicid != jrec->dicid) continue;
 
@@ -362,7 +362,7 @@ int sel_sjmode(JREC* jrec) {
 	u_short* p;
 	u_short* q;
 
-	switch(jrec->class) {
+	switch(jrec->jclass) {
 	case C_N_ARABIA:
 	case C_N_ARACMA:
 	case C_N_KAZU:
@@ -373,7 +373,7 @@ int sel_sjmode(JREC* jrec) {
 	case C_N_KAZULONG:
 	case C_N_KAZULCMA:
 	case C_N_SUUJILONG:
-		p = q = Selsjadrs(jrec->class - C_N_ARABIA);
+		p = q = Selsjadrs(jrec->jclass - C_N_ARABIA);
 		break;
 
 	default:
@@ -418,7 +418,7 @@ cl_numcmn(SJ4_CONTEXT JREC* jrec, CLREC* clrec) {
 			setkouho(SJ4_CONTEXT_PASS clrec, (TypeDicOfs)1, i);
 		}
 	} else {
-		tbl = Selsjadrs(jrec->class - C_N_ARABIA);
+		tbl = Selsjadrs(jrec->jclass - C_N_ARABIA);
 		while((j = *tbl++) != SELNUMTERM) {
 			if(!chrck_numtbl(jrec->flags, j)) continue;
 
diff --git a/lib/sj4core/ph_khtbl.c b/lib/sj4core/ph_khtbl.c
index 549730f..94d8ced 100644
--- a/lib/sj4core/ph_khtbl.c
+++ b/lib/sj4core/ph_khtbl.c
@@ -83,7 +83,7 @@ int ph_khtbl(SJ4_CONTEXT CLREC* clrec) {
 	JREC* jrec;
 	int   flg = FALSE;
 
-	switch((jrec = clrec->jnode)->class) {
+	switch((jrec = clrec->jnode)->jclass) {
 	case C_DICT:
 		ph_setsty(SJ4_CONTEXT_PASS clrec);
 		break;
diff --git a/lib/sj4core/priority.c b/lib/sj4core/priority.c
index 5a5158f..b242304 100644
--- a/lib/sj4core/priority.c
+++ b/lib/sj4core/priority.c
@@ -104,7 +104,7 @@ int priority(SJ4_CONTEXT CLREC* clrec) {
 
 	if(clrec->cllen == clrec->cl2len) return 0xff;
 
-	if(clrec->jnode->class == C_BUNSETU) {
+	if(clrec->jnode->jclass == C_BUNSETU) {
 		prty = Termtbl[clrec->right] & GETPRI;
 		return (0xf0 + prty);
 	}
@@ -221,7 +221,7 @@ finish:
 
 	if(cl2rec->jnode->hinsi == SUUSI) prty -= 3;
 
-	if(cl2rec->jnode->class == C_DICT &&
+	if(cl2rec->jnode->jclass == C_DICT &&
 	   cl2rec->jnode->jlen == 1 && (cl2rec->kubun != K_DOUSHI)) {
 		prty -= 2;
 	}
diff --git a/lib/sj4core/selclrec.c b/lib/sj4core/selclrec.c
index 8d058ec..a57f546 100644
--- a/lib/sj4core/selclrec.c
+++ b/lib/sj4core/selclrec.c
@@ -51,7 +51,7 @@ void selclrec(SJ4_CONTEXT2) {
 
 	while(rec) {
 		if(len > (unsigned int)rec->cllen) return;
-		if(rec->jnode->class == C_BUNSETU) break;
+		if(rec->jnode->jclass == C_BUNSETU) break;
 		rec = rec->clsort;
 	}
 	if(!rec) return;
diff --git a/lib/sj4core/setjrec.c b/lib/sj4core/setjrec.c
index e681294..4be9176 100644
--- a/lib/sj4core/setjrec.c
+++ b/lib/sj4core/setjrec.c
@@ -242,7 +242,7 @@ void setjrec(SJ4_CONTEXT u_char* tagp, int mode) {
 		rec->jseg   = prevseg;
 		rec->jofsst = ptr - dicbuf;
 		rec->jofsed = tmp - dicbuf;
-		rec->class  = C_DICT;
+		rec->jclass  = C_DICT;
 		rec->dicid  = curdict->dicid;
 		rec->hinsi  = gram;
 		rec->sttofs = headcode;
@@ -323,6 +323,6 @@ void setcrec(SJ4_CONTEXT u_char* tagp) {
 	if(!(rec = argjrec(SJ4_CONTEXT_PASS(int) ClYomiLen(tagp), (JREC*)NULL))) return;
 
 	rec->jofsst = tagp - CLSTUDYDICT;
-	rec->class  = C_BUNSETU;
+	rec->jclass  = C_BUNSETU;
 	rec->hinsi  = ClGramCode(tagp);
 }
diff --git a/lib/sj4core/setkouho.c b/lib/sj4core/setkouho.c
index 4b6c6f1..124bdfd 100644
--- a/lib/sj4core/setkouho.c
+++ b/lib/sj4core/setkouho.c
@@ -59,6 +59,8 @@ void setkouho(SJ4_CONTEXT CLREC* clrec, TypeDicOfs offs, int mode) {
 	kptr->clrec = clrec;
 	kptr->offs  = offs;
 	kptr->rank  = 0;
+	kptr->cost  = getcost(SJ4_CONTEXT_PASS dicbuf + offs);
+
 	kptr->styno = 0;
 	kptr->mode  = (u_char)mode;
 
@@ -97,6 +99,8 @@ void setkouho(SJ4_CONTEXT CLREC* clrec, TypeDicOfs offs, int mode) {
 
 	kptr->clrec = clrec;
 	kptr->offs  = offs;
+	kptr->cost  = getcost(SJ4_CONTEXT_PASS dicbuf + offs);
+
 	kptr->rank  = 0;
 	kptr->styno = 0;
 	kptr->mode  = (u_char)mode;
@@ -134,6 +138,7 @@ void ph_setkouho(SJ4_CONTEXT CLREC* clrec, TypeDicOfs offs, STDYIN* sptr) {
 	kouhotbl[0].clrec = clrec;
 	kouhotbl[0].offs  = offs;
 	kouhotbl[0].rank  = 0;
+	kouhotbl[0].cost  = getcost(SJ4_CONTEXT_PASS dicbuf + offs);
 
 	kouhotbl[0].mode = sel_sjmode(jrec = clrec->jnode);
 
diff --git a/lib/sj4core/srchnum.c b/lib/sj4core/srchnum.c
index c09be83..7fe4cd0 100644
--- a/lib/sj4core/srchnum.c
+++ b/lib/sj4core/srchnum.c
@@ -102,7 +102,7 @@ setnrec_sub(SJ4_CONTEXT u_char* p, u_short flag, int stb) {
 	}
 
 	if((rec = argjrec(SJ4_CONTEXT_PASS len1, (JREC*)NULL))) {
-		rec->class  = suuji_class;
+		rec->jclass  = suuji_class;
 		rec->hinsi  = SUUSI;
 		rec->sttofs = headcode;
 		rec->stbofs = (u_char)stb;
diff --git a/lib/sj4core/wakachi.c b/lib/sj4core/wakachi.c
index 0df0d34..4f9fa15 100644
--- a/lib/sj4core/wakachi.c
+++ b/lib/sj4core/wakachi.c
@@ -68,7 +68,7 @@ void wakachi(SJ4_CONTEXT2) {
 
 		if(!(jrec = argjrec(SJ4_CONTEXT_PASS i, (JREC*)NULL))) return;
 
-		jrec->class = C_WAKACHI;
+		jrec->jclass = C_WAKACHI;
 		jrec->hinsi = D_MEISI_1;
 
 		if(Chrtbl[*(next - 1)] & TAI_KGU)
@@ -78,7 +78,7 @@ void wakachi(SJ4_CONTEXT2) {
 	else {
 
 		if(!(jrec = argjrec(SJ4_CONTEXT_PASS 0, (JREC*)NULL))) return;
-		jrec->class = C_WAKACHI;
+		jrec->jclass = C_WAKACHI;
 		jrec->hinsi = MEISI_6;
 
 		while((int)jrec->jlen < maxlen) {