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

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

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

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

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