#!/usr/bin/perl -w                                    # find-a-func
use strict;

                                                   $_='$;="per
                                               l";map{map {s}^\s+}}
                                             ;$_{$_}++unless(/[^a-
                                                 z]/)}split(/
                                                 [\s,]+/)i
                                                 f(/alpha.
                                                 *$;/i../w
                                                 ait/)}`$;
                                                 doc\040$;
                                               toc`;;;@[=k
   eys%_;$;    =20;$:=15;;for(0..($;*$:-1    )){$;[$_]="_"
 ;}until($%++>3*$;||@]>2*$:-3){@_=split(//,splice(@[,rand(
@[),1));if(3>@_){next;}$~=int(rand($;));$^=int(rand($:));
$-=$~+$^*$;;my$Erudil=0;{if($Erudil++>2*$:){next;}$a=(-1,
  0,1)[rand(3)];$b=(-1,0,1)[rand(3)];unless(($a||$b)&&$~
  +$a*@_<=$;&&$~+$a*@_>=0&&$^+$b*@_<=$:&&$^+$b*@_>=0){re
   do;;}my$llama=0;;for(0..$#_){unless($;[$-+$a*$_+$b*
    $;*$_]eq$_[$_]||$;[$-+$a*$_+$b*$;*$_]eq"_"){$llam
    a++;last;}}if($llama){redo;}push@],join("",@_);f
     or(0..$#_){$;[$-+$a*$_+$b*$;*$_]=$_[$_];}}}@_
      =sort@];unshift@_   ,"Find:","-"x5;for$a(0.
       .$:-1){for$b(0.      .$;-1){$~=("a".."z")
        [rand(26)];$_          ="$;[$a*$;+$b]".
          $";s;_;$~;              ;print;}$_=s
           hift@_||                 $";;print$
            ",$",                    $_,$ /;$_
            =shi                     ft@_  ||$
           ";pr                      int   $"x
            $;,                      $"x   $;,
             $",                     $",    $_
             ,$/;;                    ;}'   ;;;
             s[\s+]                   $$g;  eval;
             __DATA__

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