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

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

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

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

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