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

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

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

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

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