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