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