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

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

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

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

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