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