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

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

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

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

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