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