butbro buttto buutuo kkoktu koboko kokoku kokoro kokott kokubo kookoo kootoo koottu korbut korkor korkut kororo korubo koruru kotoko kottur kotuku koubou koukou kouoro kourou kourtt koutou kozoku kubutz kuroko kurort kururu kuzuko obturb ookroo oooooo orozko orrour ottoor outour outtro ozourt ozturk roboto rokkor rokuko rokuro rotork rotour rotout rotrou routot rubbot rubout rubro- rubutu rukozo rukutu rurutu rutour tkoutt toboot tobruk tokuko tokuro tookto tootoo toozoo torkuz tororo tortor tortou totoro totrot tourou toutou toutuo trokut trotro tuktuk tuotuo turbo- turbot turko- turtuk turtur tururu tutour tuttut u-boot urrotz utkoor utroor utukku utukur zoozoo zorzor zoukou zouzou

bbbbbbb bok-bok boo-boo boobook bootout borotou boukout bourout bourrou boutoko brokour buttout kobroor kokorou kor-kor korkoro kottoor kotturu kuttoor oktrout oroboro orzotto otokutu ottrott outboob outbutt outroot ozkok rootout rootrot rozborz rub-out rubbour tokobot too-too tookout torbook tortour tototoo touboro toukoro toukoto tro-tro trotout trubrot tuk-tuk turbott tut-tut ububboo zou-zou zoukout

bbbbbbbb bo-bo-bo borututu broubrou buruburu burukutu buzzbuzz kobukuro kokborok kukukuku kukuruku kuruburu kurukuru out-book out-buzz roboturb roboturk rokkurro tokotoko toottoot torbrook torotoro tourbook tourtour tukutuku turkbuku turturro ubbubboo zuzzurro

borborbor bouzourou koukourou toukouzou tuko-tuko tuku-tuku tuotuorou tuttototo

brooktrout kotukutuku kouroukoro kouroukoto kukkurukuu touroukoro tutortrout

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