d-dot ddddd dholl dhool dhoot do-do do-ol dodol dodoo dohol dohul dollo dollu doodo dooth doout dotoo dotto doull douth duddo dudou dullu hhhhh hhtdd ho-ho ho-oh hoddu hodod hohol hohot hollo holo- holou holul hoold hotol hotot hotto hould hoult houtu hudud hudul huhuh hullo hulot huolu hutto huttu loddo lohho lollo lolol lolth looth lotto lotud louth luddu luhot lulul lutol lutto odolo odoul odudu oh-oh oldto olotu ooooh ooooo othou otolo ototo otulu oullo outdo outto thold tholl thoth thoul thout to-do to-ho tohot toldo tollo toloo tolu- toold toolt tooth toto- totoo touho tould toull ttttt tudou tulou tuotu tutto udol udoll udult uh-oh uh-uh uhdoh uhhoh uhhuh ululu ututo uuuuu