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