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