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

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

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

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

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