my @ar = qw/NEAR LANE EARS AREA/ ;
# @ar = qw/LINGO MILLS SMOCK IDIOM LOGIC/;

print "$_\n" for Z(@ar);

sub Z{
while(1){@l=map{splice@_,rand@_,1}@_;@_=@l;return@_ if join('',reverse@l)eq join'',map{map{chop}@l}@l}
}