Because you can't start a word with RD. You have to select words which end with letters someone could build new words off of.
Such as ontarIO.
Co-Moderator, Bipolar Forum
It is a melancholy of mine own, compounded of many simples, extracted from many objects, and indeed the sundry contemplation of my travels, in which my often rumination wraps me in a most humorous sadness. -- William Shakespeare