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