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

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

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

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

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