bibin bibri bilbi bili- bilin billi billu bilut binit binub birin birni birun birur bitit bitru bitti bitun blini blinn blirt blitt blunt blurb blurr blurt brill brini brinn brint britt brrrr bruin bruit bruiu brull bruni brunn brunt bruri bruun btr-t built buirn bulb- bulbi bulin buliu bull- bulli bulti bulul bulun bulut bunin bunun bunut burin burli burn- burnt burri burru burtt burun burut butin butit butut ibbur ibill iblin ibtin iiiii iitti iiuni illin illit illui iltur ilulu inbin inili inini innit inniu innti inrun intil inuit inurn irbit irill irinn irrit itbit ittti itu-r itu-t ituni ituri iturn ituru itutu iuliu iunit libin libri libru libun lilin liliu lilli lilun linin linlu liril lirui litir littb litti litui liuli lubin lubun lubur lulin lulli lulul luni- lunin lurin lurun lutin lutui luuri nibbi niibi nilin nilit ninib ninti nintu ninur ninut nirit nitin nitr- nitti ntini ntnui nu-nu nuiit nulli nulti nunit nunni nunun nurin nurit nurlu nurri nurun nutil nutri ribbi ribin rintt rubbi rubin ruili ruiru rulli runin runit rutin rutli rutul ruutu t-nut tbill tbtbt tbutt ti-ti tibbi tibbu tibin tibni tibur tilli tinli tinui tinun tirit tirli tirru tirtl tirur titii titil titin titli titti tllbr tllnn tntnt tribu triin trill trini trit- tritn tritt trubu truit trull ttttt tubi- tubin tubli tubri tubul tuili tulin tulir tului tulun turbi turbt turin turit turn- turnt turnu turri turtu turul turut tutin tutli tutti tutun tuubi tuuli tuuri tuuru u-bit u-n-i u-nii ubirr uitti ullin ullur ululu uluru uluti unbit unini uninn uniti unlit unnun unnur unnut unrun until unurn urin- urtlu urubu uruit uruli ururi uruti urutu utili uttur uturn uturu uuuuu