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