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

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

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

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

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