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

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

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

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

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