b-unit bbbbbb bibiri bibiru bihpur bimini binbit binpur biribi birini birpur birtin bitium bitpim bitrum bittur bituin biturn bribir bribri brimir brubru bruhin brunii brutii brutti brutum bububu bummit bumpit bunium burbur buriti burnin burnum burnup burnut burrup burtin bururi burutu butmir buttin buttir hibhib hintin hintiu hipihi hippin hirtum hittin hnrnpr hrrmph htruth hubbub hububb huh-uh huimin humhub humhum humiri hummin hummum hunnum hunnur hurth hurumu huthur huthut ibrium ihitit imhurt imirim imputt inburn inhumi inipit innuit intimi intrim intuit intumb inturn iprint irrupt ithunn ittiri iturbi iturup mibbit miburi mihuti minimi minimt minium minnit minnum minpin minthi mintiu minuit mirihi miriti miruru mithri mithun mithur mitini mitrit mittin mm-hmm mrpibb muhuhu muhurr muhuru munhiu munnur muntin muphti mupini muriti muritu murium murmir murmur murrin murrit muthur mutitu muttur muturi mutuum muumuu nhrtbt nibiru nibrin niburu nihiru nimbin nimbit nimrim nimrin nintin nip-up nippit nippur nitrum nittur ntuntu nubbin nuh-uh nummi- nuprin nurpur nuthin p-unit phitti pihuri pimmit pimpri pin-up pinni- pinuin pipipi pipiri pippin pippip pirrip pitpit pitpnb pituri piumhi piupiu pppppp primip primum printb printr prithu pruitt prunin prunum prurit ptitim pubnub pumiri pumpup punpun pupput puriri purpit purpur put-in put-up puthir puthri puthur putini putput puttin puttur rhipi- rhithm ribbin ribbit rimini rintin rippit rirumu ritbum ritini rititi rub-up rubini rubrum rubutu ruhubi rumbur rumint rumphi rumti- run-in run-up runhit runnin runnit runumi rupini ruppin rurutu ruthin t-unit thirpu thithi thrimp thrnnm thrumb thrump thrupp thumri thurii thurin tibbin tibbit tibiri timimi timiri tinhrn tinnum tintin tintri tip-in tip-it tip-up tipiti tippit tiptur tirhut tirrit titbit titibu titini titipu titiri tittup tribit tribut triinu trimup trinum tripup tritip trubin truitt trumph tuhuti tuipui tuiuti tumbhi tumtum tuntum turbin turbit turini turmit turmut turnin turnip turnup turpin turrum turtur tururu tuttut u-turn ubuntu ubuthi uh-huh um-hum umbith umbuth uminum umirim unbitt unburn unh-uh unhunh unhurt unimin uniphi unnitt unruth untint untrim untrum unturn up-put upinit upturn urturn uruppu uthiru utrubi uttini