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  1. or download this
    @_ = (@{$_ = [qw{emacs vi}]}, reverse @$_);
print "Why do we have to hide from the police, daddy ? Because they us
+e ", shift @_, " and we use ", shift @_, ", son.\n" while(@_);
  2. or download this
    @_ = (@{$_ = [qw{emacs vi}]}, reverse @$_);
print "Why do we have to hide from the police, daddy ? Because they us
+e ", shift, " and we use ", shift, ", son.\n" while(@_);