Looks terrific but works: 
@to_check=('bat','bbat','brat');
for (@to_check){
 if (/^([bat])(?!\1)([bat])(?!\2)([bat])(?!\3)/){
   # do something
 }
}

[download]
Just create regexp dynamically.

In reply to Re: regular xpression stuff by Lucky
in thread regular xpression stuff by Anonymous Monk

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