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

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

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

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

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