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