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