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