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

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

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

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

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