Any permutation starting 1, 5 , ... 4! of them

Any permuttion starting 1, 6, ... 4! of them

Any permutation ending ..., 5, 1 4! of them

Any permutation ending ..., 6, 1 4! of them

Any permutation starting 5, 1, 6, ... 3! of them

Any permutation starting 6, 1, 5, ... 3! of them

etc. ...