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

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

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

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

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