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

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

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

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

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