bbbee be-er be-ro beber bebog beebe beffe befoe befog befor begee begge begob begof begor beofe beoff berbe bereg berge berob beroe beror berre bfrog bo-bo bobr bobre boege boero boffo boger bogge bogoe bogof bogor booer boore borbo boree borer borge borgo boro- boroo borre borro breef breer breg- brege bregg breo- brere brobo broer brrrr ebber eberg eeeee efere effer efore egger eofor eorre erbbe erber erege erere ergo- eroge eroor erore error febre feeor feere fefor feoff ferr- ferre ferro fogbo foggo foore fore- foreo forge forgo forro freer frege frere frobe frore gberg geber gebre geebo geere gegge geoff georg gerbe gerbo gerre go-go go-oo gobbe gobbo gobeo gofer goffe gofor gogro goobo gooff googe goore gorbe goree gorer gorge gorgo gorre grebe grebo greef greer grefe greff grege gregg grego grofe groff groge grogg groof grrrr o-fer o-r-b oberg oboro obreb offer offof offre ogogo oo-er ooooo oreo- orere orero orfeo orfoe orfor orobe orobo oroer orrgo rebbe rebeg reber reefe reege reere refer reffe reffo reger regge reggo reorg rere- reree rerob ro-ro robbe robbo rober robo- robor roero roffe rofor roger rogge rooer roofe rooge roore rorer