bibri birth birur bitit bitru bitti brith britt brrrr bruit bruiu bruri btr-t buith burri burru burtt burut butit butut h-iib hhhhh hi-hi hibhi hibit hibri hibur hirth hirur hitit hthrt hubur huhuh hurri hurtt hurtu hutir hutit huttu huuru ibbur ihurt iiiii iitti irbit irrit itbit ittti itu-r itu-t ituri ituru itutu ribbi rithi rubbi ruhub ruiru ruthi ruthu ruuth ruutu t-hub tbtbt tbutt thibi thiri thiru thrub thuir thuit thurt thuru ti-hi ti-ti tibbi tibbu tibur tirit tirru tirth tirur tithi titii titti tribu trit- tritt trubu truit truth ttttt tubi- tubri turbi turbt turit turri turtu turut tutti tuubi tuuri tuuru u-bit ubirr uh-uh uhhuh uhtri uhuru uitti urith urubu uruit ururi uruti urutu uttur uturu uuuuu