erketu erreth errett ethere ethete ettutu eutere heehee heeter hehehe hehheh hereke herher herter herthe heter- hether hetter heurte heutte htruth huetre huh-uh hurrer hurter hurth huthur huthut hutter k-tree keeker kehrer kekkut kereru kerker kerkuk kertee kerteh kether ketter ketuke keuruu kreker kretek kreuth kukere kurree kurukh kururu kutke kutter r-tree reeker rehete reheur rekrut reteer reteet retere rether retree retret retter rettur returu reuere reuter reuthe reutte rukutu rurkee rurutu ruther ruttee rutter t-tree te-hee teehee teerth teetee teeter teethe tekkeh tekrur terete terrer terret terter tertre tetete tethee tether tetteh tetter thehue thekte thetee thethe thettu threet threte thrett thurte tkhkut treete trehet treker tretee trette tretuk treuth trueth truett truker tuktuk turker turret turtuk turtur tururu tuteur tuther tutter tuttut uh-huh ureter urette uteute utukku utukur