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