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