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#some values to use
my @items = qw(oranges apples pears lemons kumquats);
...
  print "$items[$_] | $items[$_ + $offset]\n";
}0..($offset-1);

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20