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

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

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

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

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