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

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

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

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

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