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  1. or download this
    map{$i=$_*.05-1;map{$r=$j=$_*.05-2.3;$z=$i;$b=$";for(a..iv){$m=$r*$r;$
+n=$z*$z;
$m+$n>4?$b="+":($z=2*$r*$z+$i,$r=$m-$n+$j)}print$b}0..59;print$/}0..39
  2. or download this
    map{$i=$_*.05-1;map{$r=$j=$_*.05-2.3;$z=$i;$b=$";for(a..iv){($m=$r*$r)
++
($n=$z*$z)>4?$b="+":($z=2*$r*$z+$i,$r=$m-$n+$j)}print$b}0..59;print$/}
+0..39
  3. or download this
    map{$i=$_/20-1;map{$r=$j=$_/20-2.3;$z=$i;$b=$";for(a..iv){($m=$r*$r)+
($n=$z*$z)>4?$b="+":($z=2*$r*$z+$i,$r=$m-$n+$j)}print$b}0..59;print$/}
+0..39