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