-tree ddddd ddruk dedde dedee deder dedur dedut deede deere deked derde dered derek derke derre derue deruk detek deter detre dette detur deure deut- drdre dredd drede dreed drere drude du-ku duded dudek duder duduk duere duerr duete duett duked dukeu dukku dured duree durer duret durre durte durtu dutte e-dee edder eddre edere edred edu-k eeeee eerde ekker ekuku ekuru erdek erdre erdut erede erere erred errtu erte erter eruke eteke etete etree etrek etter etude eturu eurre k-dee k-ute kedde keder kedre keere keked kerek keret kerre kertu ketek keter kette kreek kreke krete kreuk kudde kudur kukur kurek kurku kurre kurte kurud kuruk kutte kuttu kutur redde reder redur reede reere rekke rerde rere- reree reret reted retee reter rette reuer reuet reute rt-rk ruder rudkk ruede ruere ruete rukke rurde ruter rutte ruutu teder teerd teket tekke terek teret tereu terre tert- teter tetr- tette treed treer treet trere trete trett treut trude trued truer truke trute ttttt tuder tudre tudur tukur turek turet turku turre turtu turut tutee tutku tutte tuuru udder udert ukeke ukert urdee urduk urker urkut urter urutu uter- utter uttur uturu uuuuu