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