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