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

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

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

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

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