IFS= y=$[17-++z] x=-15 a=${a//[^*]/((++x));} eval ${a//\*/'b[~(y<0)*-2000-x++*99/(y?y:1)]="($x, $y) ";'}read a&&. *||echo "${b[*]}"
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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