(0 7 6)(1 20 4)(2 9 5)(3 15 14 12 10)(8 18 16 13 11)(17 21 19)
ALLOWS (11/8)-SEQUENCE
1: (0 3 12)

(0 10 3 7 6)(1 20 4)(2 9 5)(8 18 16 13 11)(12 15 14)(17 21 19)
2: (1 20 4)

(0 10 3 7 6)(1)(2 9 5)(4)(8 18 16 13 11)(12 15 14)(17 21 19)(20)
3: (3 7 10)

(0 10 6)(1)(2 9 5)(3)(4)(7)(8 18 16 13 11)(12 15 14)(17 21 19)(20)
4: (8 18 11)

(0 10 6)(1)(2 9 5)(3)(4)(7)(8)(11 16 13)(12 15 14)(17 21 19)(18)(20)