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

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

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

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

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