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

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

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

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

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