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

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

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

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

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