bbbbbb bibiri bibiru bidbid biobor biodot biotti biribi birori bitour bitrot bittor bittou bittur bobbio bobiri boditi booboo bootit borbor boridi bororo botiid botoro boubou bouddi boudit boudou bourou boutob bribir bribri briord brito- britot brotto brubru brutii brutti brutto bubbio bububu budrio burbot burbur burdit burdur burior buriro buriti burotu burrio bururi burutu butbro buttir buttto buutuo ddr-ii didtoo diii-d diiod- diiodo diodor diorio dioubo dobi-i dobrut dododo dodori doobdi doorto dorbod doriot dorito dorobo dorood dororo dorrit dotbot dotdot dotodo dotoid doudou dourou doutou doutro drobot drouot druitt dubdub durior durtro dutoit ibibio ididit idoido idotoo iiooio irbidi iridio irido- irobot irridu irrour ittiri ittro- iturbi obturb odroid oooooo oordoo ordoru orobii orrour ortrud otidid otitid ototoi ottoii ottoor ouioui outbid outbud outdid outour outtro ribbit ridott ridout rititi ritto robbio roboid roboto roditi rorodt rotour rotout rotrou routot rubbot rubout rubro- rubutu rudrur rurutu rutour tibbit tibio- tibiri tiboro tidbit tirbid tirbou tirodi tirrit titbit titibu titiri to-rit toboot toitoi tootoo torbit torito torodi torodo toroid torori tororo torrid torrit tortor tortou totoro totrot tottoi toudou touitt tourou toutou toutuo tribit tribo- tribut triduo triour trito- tritor trotro truitt tuboid tubrid tuiuti tuotuo turbid turbit turbo- turbot turdid turodi turrid turtur tururu tutour tuttut u-boot uburoi udburu uitoto urodid utroor utrubi