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