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