ceecee cerete ceruce creeke creete creket curete currer curret curter cutcut cuttee cutter eckert eerect erketu errett etcetc ettutu eutere k-tree keeker kekkut kereru kerker kerkuk kertee ketter ketuke keuruu kreker kretek krueck kukere kurkcu kurree kururu kutke kutter r-tree recrue recuer recure recurt reeker rekrut retece reteer reteet retere retree retret retter rettur returu reuere reuter reutte rucker rukutu rurkee rurutu ruttee rutter t-tree teetee teeter teeuck tekrur tercer tercet terete terrer terret terter tertre tetete tetter teucer tr-rec treck- treece treete treker tretee trette tretuk treuce truett truker tucket tuktuk tureck turker turret turtuk turtur turucu tururu tuteur tutter tuttut uecker ureter urette uteute utukku utukur