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