I'm trying to define a set A. I want to say that, given an integer z, every
set A has 6 members, these being pairs of integers (z+(k+1), z-(k+1)),(z
+(k+2,), z-(k+2)),(z+(k+3,),z-(k+3)),(z+(k+4),z-(k+4)), (z+(k+5),z-(k+5)),
(z+(k+6),z-(k+6)). Can someone advise me on the best way to write it?
With thanks.


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