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perl -Mconstant=Z,20 -l map{$i=$_/Z,print map{$r=$;=$_/Z;$z=$i;$n=$z*$z,$m=$r*$r,$z=2*$r*$z+$i +,$r=$m-$n+$;for a..z;$m<4?$":"+"}-46..Z}-19..Z
map{$i=$_/Z,print map{$r=$;=$_/Z;$z=$i;$n=$z*$z,$z=2*$r*$z+$i,$r=($m=$ +r*$r)-$n+$;for a..z;$m<4?$":"+"}-46..Z}-19..Z