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

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

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

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

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