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

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

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

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

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