b-room bbbbbb bibiri bibiru biobor biomom biribi birori bobbio bobiri bombom bombur booboo boom-o borbor borium bormio boromo bororo boubou bourou bribir bribri brimir bromio bromo- brubru bubbio bububu bumboo burbur burior buriro burrio bururi ibibio ibrium iiooio imirim irrour mbombo mbomou miburi mimori miombo miomir miroir mirour mirror mirumo miruru mommur momoir moomoo moormi morbio moribi moriro mormor mormur moroii mourou murio- murium murmir murmur muumuu ombro- omoio- oooooo oriomo ormuri orobii oromoo orrour ouioui rimbor rirumu robbio robomb romiri romour rubro- rubrum rumbur rumour ubombo uburoi umirim