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

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

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

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

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