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

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

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

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

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