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($m=$r*$r)+($n=$z*$z)>4 ... $n=$z*$z,($m=$r*$r)>4
map{$i=$_/20-1;map{$r=$j=$_/20-2.3;$z=$i;$b=$";$n=$z*$z,($m=$r*$r)>4 ?$b="+":($z=2*$r*$z+$i,$r=$m-$n+$j)for a..z;print$b}0..59;print$/}0..3 +9