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

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

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

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

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