[r-t] Extents of minor

[Stephen Penney]

ROH: "I think there are only 11 place notations"

I make it 12:

1. X
2. 12
3. 14
4. 16
5. 34
6. 36
7. 56
8. 1234
9. 1236
10. 1256
11. 1456
12. 3456

Percy