boohoo boom-o borbor borkou borkum boroko boromo bororo boubou boukou bourou brokkr bromo- brubru bububu bukkur bukuru bumboo burbur burhou buruku h-bomb h-hour ho-hum hohoho hoohoo hookor hookum hooroo hororo horror hubbub hububb huh-uh hukkok humhub humhum hummum humour hurroo hurumu khoroo khoruk khorum khuhro khumbu koboko kohoku kokkoh kokoku kokomo kokoro kokubo komkor komoro komuro kookoo korkor kormuk koromo kororo koroum korubo koruru koubou koukou kouoro kourou krokom kukuom kum-bu kumbor kumbuk kumbum kumbur kumkum kummuh kumukh kurmuk kuroko kurukh kururu mbombo mbomou mborko mm-hmm mohoro mohuhu mokoro mommur momoko moomoo mooruk mormor mormur mourou mubuko muhuhu muhurr muhuru mukuro mukuru murmur muumuu o-hook ohohoh okumoo ombro- oohooh ookroo oooooo oromoo orrho- orrour rhomb- robomb rokkor rokuko rokuro romour rubro- rubrum ruhroh rumbur rumohr rumour ubombo uh-huh um-hum urhobo

bbbbbbb bohorok bok-bok bommuru boo-boo boo-hoo boobook bourrou brokour bukhoor bukhoro h-r-m hobomok hohokum hoo-hoo horrour hub-bub hur-bur khombok khubkuh kobroor kokorou kokumbo kommuru kookoom kor-kor korkoro kum-boo kum-kum kurumbu mbokomu moo-moo morokro morrum moumour mukurob murukku muu-muu oroboro oubombo r-h-m rhombo- rubbour ruh-roh rumburk ububboo

bbbbbbbb bo-bo-bo bookroom boomboom boomburb broubrou buruburu hokohoko horohoro hubbuboo humuhumu hurr-bur khomokuh kobukuro kohukohu kokborok kom-ombo kukukuku kukuruku kuruburu kurukuru kurumbur mbumburu mohoohoo mohurrum mokuroku murumuru ohboohoo rokkurro ubbubboo uh-uh-uh

boom-boom borborbor bumhururu hurr-burr koukourou kurumbhur moko-moko oromoromo rumuokoro

kouroukoro kukkurukuu kuromukuro rumorrumor ummu-hubur

mmmmmmmmmmmm ooohooohoooh

bbbbbbbbbbbbbbb

hhhhhhhhhhhhhhhhhhhhh

hohohohohohohohohohohohohohohohohohohohoho