bbbbbb beebee beefer before beforu befour befree beiber berbee berbeo berber berere berour berrer berrie berube beruri beurre bibber bibiri bibiru bieber biobor biribi birori bobber bobbie bobbio bobiri boeber boerre boober boobie booboo booue borbor borebi borfee borier borore bororo boubou boueer boufee bouffe bouree bourou bourre breefe breere breffo breuer bribe- bribee briber bribir bribri briefe brubru bruree bubber bubbio bububu buffer bufori burbur burfee burier burior buriro burree burrer burrie burrio bururi e-four ebr-ii ebrie eburru eebree eerier effeir effere effoff effore eforie er-rif erbree errori errour euerie eururo febri- feerie feeror feifer feirie feofor ferber ferfer ferier ferior ferrer ferri- ferrie ferro- ferrur fibber fibro- fieber fiebre fiefie fierro fobiri foboff foerre foofoo foofur foreui forrer forure foufou fourbe fourbi fourer fourie fourof fourou frbroo frebie freebo freeof frefre freire freure froofe fufore furber furfie furfur furore furour furrer furrfu i-bere i-bure i-free ibero- ibibio ier-oe ierror iffier iiooio ioffer irereo irrour o-bofe oberiu oberoi oferre offire offrir oooooo orbier orbieu orobii orrour ouerre ouioui ourebi rebore rebour rebuff reefer reeffe refeff refire refrei refurb reiber rerobe reroof reueir reuere reuire reuour ribber ribbie ribero ribibe ribier rieber riffer rififi riuere robber robbie robbio roeier roiffe roofer roofie rouffe rubbee rubber rubbie rubier ruboff rubrie rubro- ruffer ruffie rui-be uburoi urouer uroure uruffe