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

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

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

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

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