Devu and his three Hands

As you have probably realized up to now that Devu is not a normal guy, he is a very weird and abnormal guy. Normally people have two hands, but Devu has three of them. So he wears three wrist watches on his hands. Devu loves to write name of his friends on his wrist watches. So he want to attach a string corresponding to name of his friends on each wrist watch. He is a quite particular about n