font-stretch mapping with different font family sets

(only numbers should appear in the body of the table)

width | full | 1-3 | 1-4 | 1-5 | 2-6 | 4-6 | 4-7 | 6-7 | 7-9 | 8-9
1 | F | F | F | F | F | F | F | F | F | F
2 | F | F | F | F | F | F | F | F | F | F
3 | F | F | F | F | F | F | F | F | F | F
4 | F | F | F | F | F | F | F | F | F | F
5 | F | F | F | F | F | F | F | F | F | F
6 | F | F | F | F | F | F | F | F | F | F
7 | F | F | F | F | F | F | F | F | F | F
8 | F | F | F | F | F | F | F | F | F | F
9 | F | F | F | F | F | F | F | F | F | F