d-dot ddddd do-do doddy dodon dodoo dondo donny donon donot donut doodo doody dooty doout dotoo dotto dotty dount douyu doyon doyou duddo duddy dudon dudou dudyn dundo dundy dunno dunny dunod dunun dunyu duont dutty duyun dyott nnooo no-do no-no noddy nodto non-u nondo nonno nonny nonot noonu notdo notno noto- noton notto notty noudy nouny noyon noyou ntntd nu-nu nuddy nunny nunon nunun nuton nutty nuydu odont odudu onnuy onond onont onoon onoto onout onto- ontoo onyon onyou ooooo otono ototo otuyo otyn oudon oundy outdo outon outto t-nut tntnt to-do toddy tondo tondu tonny tono- tonod tonto tonyd toto- toton totoo totty toyon toyou ttttt tudou tudun tundu tunny tunon tuotu tutoy tutto tutty tutun undun unnun unnut ututo uuuuu y-o-u ydout yo-yo yondu yotto youdo youdu yound youno yount youon ytund ytynt yunyu