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

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

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

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

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