bbbee be-er be-ro beber bebog beebe beeri begee begge begob begor begue begur beibi beier beige beire beoir beour berbe bereg berei berge bergi berie berig berio beriu berob beroe beror berre berri berru beuer beure bibbe bibbo biber bibie bibio bibri biebe biere bieri big-i bigge bigig bigoo biore bioue birgi birgu birie birou birur biure bo-bo bobbi bobr bobre bobri boege boero boeur boger bogge bogie bogoe bogor bogu bogue bogur boibe boier boire boiro booer boore booru borbo boree borer borge borgo borgu borio boro- boroo borou borre borro bouee bouer bouge boure bourg bouri brebu breer breg- brege bregg breo- brere breu- bribe brieg brier brige brigg brigi briou brobo broer broue brrrr bruer bruge brugg bruiu bruri bubbe buber buger bugge bugoo bugre buire burge burgi burgo burgu burie burio buroo burri burro burru ebber ebbie eberg ebibe eboue ebrio ebure eeeee eerie egger eggie eggig egio eieio eiger eirie eorre erbbe erber erege erere ergo- erier erio- eroge eroor erore error erugo eubie eubro euro- eurre gberg gberu geber gebre gebur geebo geere gegge geier geige geire geiue georg gerbe gerbi gerbo gerre gerri ggobi gibbe gibbi giber gibi- giger gigge gigue giour girei girru giubo go-go go-oo gobbe gobbi gobbo gobeo gobig gobio gobir gogoi gogro gogue gogui goibo goobi goobo googe goore gorbe goree gorer gorge gorgo gorie gorir gorre gouge goure grebe grebo greer grege gregg grego greig grgur grieg grier grigg groge grogg groue grrrr grubb grube gruiu grure gubbe gubbi gubbo gubei guber gubio gubru guere guero guggi gugir guige guire guiri guiro guoge gurge gurgi guroo gurre gurro gurur i-beo ibbur iberg ibero ibibo ibogo ibore ieiri ierei ieroe iggri igigi iiiee iiiii ioooi ioooo iorio iregi irobo irori irour irreg iurie o-r-b obegu obeie oberg oboro oboue obreb oeiro oggie ogier ogiri ogogo ogugu oguri oo-er oogie ooioo ooooo oorie orebi oreo- oreoi orere orero orgie orgue oribe oribi origi origo orobe orobo oroer orrgo orube oruro ouigo ouir- ouoro oure- ourie rebbe rebeg reber reege reere reger regge reggo regie regii regio regur reigi reorg rere- reree rerig rerir rerob reuer reuir ribbi riber ribie ribo- rig-i rigio rigor ririe riuer ro-ro robbe robbi robbo rober robie robo- robor robur roero roger rogge rogoi rogue rooer rooge roore rooue rorbu rorer rouer rouge roure rubbi rubee ruber rubie rubio rubor ruegg ruere ruger rugge rugii rugir ruiru uber- ubirr ubobo uggie ugro- ugrug uigur uiro uouee ureo- urger uribe uroob urour urubu ururi uuuuu