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

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

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

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

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