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