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

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

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

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

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