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

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

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

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

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