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