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