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