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@input_array = N1 N2 N3 N6 N7
@input_A = N1 N3 N11 N11 N10 N16
@input_B = N3 N6 N2 N7 N16 N19

   if (grep { @input_B eq $_ } @input_array) 
   {
...
   }
   else
   {print "this is a wire\n\n";}