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

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

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

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

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