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

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

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

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

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