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

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

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

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

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