Awesome :) We can even bring that down to 49: 
sub p
{
  @_?map{my$a=$_;map[$a,@$_],p(grep$_!=$a,@_)}@_:[]
}

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   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: Re: (Golf) Per Mutations by MeowChow
in thread (Golf) Per Mutations by MeowChow

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