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

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

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

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

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