b-room bbbbbb bibiri bibiru biobor biomom biribi birori birpur bobbio bobiri bombom bombur booboo boom-o borbor borium bormio boromo bororo boubou bourou bribir bribri brimir bromio bromo- brorup brubru bubbio bububu bumboo bumppo burbur burior buriro burrio burrup bururi ibibio ibrium iiooio imirim impoor improp irrour mbombo mbomou miburi mimori miombo miomir miroir mirour mirror mirumo miruru mmmbop mommur momoir moomoo moopoo moormi moorup mop-up mopipi morbio moribi moriro mormor mormur moroii mourou mpombo mrpibb murio- murium murmir murmur muumuu ombro- omoio- oooooo oopiri oriomo ormuri orobii oromoo oropom orrour ouioui pimpri piombi piopio pioppi pipipi pipiri pippip pirrip piupiu poboru poipoi pombur pompoi pompom poopoo pop-up popopo poporo poppop porrum pouoir poupou pourri pppppp pribor primip primou primum priori prioro priour propi- propir propup propur pubio- pumiri pumori pumpup puriri purpur rimbor rirumu robbio robomb romiri romour rub-up rubro- rubrum rumbur rumour ubombo uburoi umirim uppoor upprop uruppu