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