bbbee be-er be-ro beber bebog bebop beebe begee begge begob begor begue begur beour bepop beppe beppo beppu berbe bereg berge berob beroe beror berre berru beuer beure bo-bo bobr bobre bobup boege boero boeur boger bogge bogoe bogor bogu bogue bogur booer boore booru borbo boree borer borge borgo borgu boro- boroo borou borre borro borup bouee bouer bouge boure bourg brebu breer breg- brege bregg breo- brere breu- brobo broer broue brrrr bruer bruge brugg bubbe buber buger bugge bugoo bugre burge burgo burgu buroo burro burru e-pro ebber eberg eboue ebure eeeee eepee egger eorre epure erbbe erber erege erere ergo- eroge eroor erore error erugo eubro euro- europ eurre gberg gberu gbpee geber gebre gebur geebo geere geeup gegge geoop georg geppo gerbe gerbo gerre go-go go-oo go-op gobbe gobbo gobeo gogro gogue goobo googe goore goper goppe gopro gorbe goree gorer gorge gorgo gorre gouge goure grebe grebo greer grege gregg grego grepe grepo greup grgur groge grogg groop grope gropp groue group grrrr grubb grube grure gubbe gubbo guber gubru guere guero guoge gurge guroo gurre gurro gurur o-r-b obegu oberg oboro oboue obreb oeppo ogogo ogugu oo-er ooooo opepe opere opobo opper oreo- orere orero orgue orobe orobo oroer orrgo orube oruro ouoro oure- p-rep pebre peebo peebu peege peere pepee peppe pepup perer perge pergo perou perre perro perur peure pgrep po-po pobe pogge pogue pooer poope poopo poore poper popop poppe poppo popup poreb porer porge porgo poro- porog porro porur pouer poupe poure prego preop prepg probe probo proer progg proor prop- prope propp propr prore puber pubo- puero puppe puppo puree purer purge puro- purre re-up rebbe rebeg reber rebop reege reepe reere reger regge reggo regur reorg repeg repop repor reppe repro repub rere- reree rerob reuer ro-ro robbe robbo rober robo- robop robor robur roero roger rogge rogue rooer rooge roope roore rooue roper roppe rorbu rorer rouer rouge roure rprop rubee ruber rubor rubup ruegg ruere ruger rugge rupee ruper u-pop uber- ubobo ugro- ugrug uouee upper ureo- urger uroob urour urubu urupe uuuuu