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