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