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