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