b-room bbbbbb bobovo bobrov bombom bombur booboo boom-o borbor boromo bororo borovo botoro botovo bottom boubou bourou boutob bromo- brotto brubru brumov brutto brutum bububu bumboo bumout burbot burbur burotu burovo burutu butbro butovo buttto buutuo mbombo mbomou mobmov mobutu mommur moomoo morbut mormor mormur moroto morrot motmot motomu motor- motoro mototv motour moturu mourou mrmoto murmur muroto mutomo muttur mutuum muumuu obturb ombro- oomoto oooooo oromoo orrour otmoor ottoor outour outtro robomb roboto robovo romour roomto rotour rotout rotrou rottum routot rubbot rubout rubro- rubrum rubutu rumbur rumour rurutu rutour rutovu t-room toboot tommot tomort tomtom tomtor tootoo tororo torovo tortor tortou tortum torvum totoro totrot tourou toutou toutuo trombo trotro trumbo tumour tumtum tuotuo turbo- turbot turmut turrum turtur tururu tutour tuttut tuvvur tv-out tvroom u-boot ubombo utroor v-bomb vorort vrbovo vrooom vvvvvv