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