(0 20 3)(1 6 2 7 4)(5 10 8)(9 15 11)(12 21 13)(14 19 16)(17 22 18)
ALLOWS (11/8)-SEQUENCE
1: (1 6 9)

(0 20 3)(1 15 11 9 2 7 4)(5 10 8)(6)(12 21 13)(14 19 16)(17 22 18)
2: (5 10 8)

(0 20 3)(1 15 11 9 2 7 4)(5)(6)(8)(10)(12 21 13)(14 19 16)(17 22 18)
3: (2 11 9)

(0 20 3)(1 15 11 7 4)(2)(5)(6)(8)(9)(10)(12 21 13)(14 19 16)(17 22 18)
4: (4 11 7)

(0 20 3)(1 15 11)(2)(4)(5)(6)(7)(8)(9)(10)(12 21 13)(14 19 16)(17 22 18)