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

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

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

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

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