d-dot d-rod ddddd do-do dodoo dodro dofor doodo doout dordt dorff dorot dorud dotoo dotto doufu douro droff drood droof drott drout dtour duddo dudou dufur durtu fodor foord ford- fordo forro forto forud forur fotur fourd fouro frodo frood froot froud fruto ftord ftrtt fu-fu fuddu furo- furor furud futur fuudo oddur odour odttf odudu oduro offof offto ofoto ofour ooooo ordro orfor orodo orout ortoo oruro orutu ototo otour ottur ouoro outdo outof outro outto ro-ro rodor rofor roodu rooft roto- rotor rotot rotto routt ruffo rufo- ruutu to-do todor toffo tofor toord tordu torro torto tortu torud toto- totoo tourd touro troff troft trood trott trout trudo truff truro ttttt tudor tudou tudur tuotu turot turro turtu turut tutor tutto tuuru ufofu urour urutu utro- utror uttur uturu ututo uuuuu