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

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

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

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

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