bbbee be-er be-ro beber bebog beebe begee begge begob begor berbe bereg berge berob beroe beror berre bo-bo bobr bobre boege boero bogge bogoe bogor booer boore borbo boree borer borge borgo boro- boroo borre borro breer breg- brege bregg breo- brere brobo broer brrrr ebber eberg eeeee egger eorre erbbe erber erege erere ergo- eroge eroor erore error gberg geber gebre geebo geere gegge georg gerbe gerbo gerre go-go go-oo gobbe gobbo gobeo gogro goobo googe goore gorbe goree gorer gorge gorgo gorre grebe grebo greer grege gregg grego groge grogg grrrr o-r-b oberg oboro obreb ogogo oo-er ooooo oreo- orere orero orobe orobo oroer orrgo rebbe rebeg reber reege reere reger regge reggo reorg rere- reree rerob ro-ro robbe robbo rober robo- robor roero roger rogge rooer rooge roore rorer