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