138  if( @deck[0] != ('A' or 'B'))
139     if (@deck[@deck[0]] != ('A' or 'B') )
140	  print toletter(@deck[@deck[0]])  
141	end
142  end




#relevant lines above; error message is 139:in `[]': can't convert String into Integer (TypeError)
#
# a deck contains numbers 1-52, and also two characters 'A' and 'B'