6
book.txt book.ply  0 0.0 0 0 0 0
h2o2.dat h2o2.ply  0 0.0 0 0 0 0
H2O.txt water.ply  0 0.0 0 0 0 0
ethanol.txt whiskey.ply  0 0.0 0 0 0 0
Cu.txt wire.ply  0 0.0 0 0 0 0
Al.txt luggage.off  0 0.0 0 0 0 0