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

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

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

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

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