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