rumbo rummi rummo rummu rumor rumpo ruomu u-pop ubirr ubobo uiro umbri umbro umiri umour uromi uroob uropi urour urpmi urubu urumi ururi uuuuu

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

bbbbbbb bim-bom biobio bombpop bommuru boo-boo boromir bourrou bromium burrium ipo-ipo mirmiru mirpuri mirrour mobimii moo-moo moriori morrum morumbi moumour mouriri murmuri muu-muu oroboro oropioi oubombo piirumi pip-pip pip-pop pom-pom pompoir poo-poo pouroum priboiu pribumi priporu propio- proprio prorump pui-pui pum-pum pumpuri purpour rimbomb robiboo robopop rubbour ubomiri ububboo uriburu

bbbbbbbb bibimbop bo-bo-bo boomboom boomburb broubrou bur-pump burriour buruburu i-ii-iii ibimirim iooooooo ipumirim mbumburu mioumiou miromiro mirrorim murumuru pioupiou piripiri poorpoor poroporo pourpour proprium proproom pumproom purpuri- ribibour rimbombo riroriro rmi-iiop roborior roumboui ubbubboo

biro-biro boom-boom borborbor burr-pump miou-miou mommoppop oromoromo ouroboroi piou-piou piri-piri prompromo pump-pump pump-room

brimborium bumpumpump muumibuumi opprobrium poo-pourri primopromo rumorrumor

bobbi-bobbi pip-pip-pip

bumpbumpbump mirrormirror mmmmmmmmmmmm propuppropup

bbbbbbbbbbbbbbb ioooooooooooooo