>
> If it were C I would just do:
>
> for(x=1;x<24;x++)
> for(y=0;y<x;y++)
> {
> // do verb on x and y
> }
>
> So I need an equivalent to that basically, in J.
;({.,.i.)&.>1+i.24
1 0
2 0
2 1
3 0
3 1
3 2
4 0
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