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

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

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

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

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