bbbbbb be-bop beebee beeper bepoor berbee berbeo berber berceo berere berrer bobber boccob boeber boerre boober booboo bop-be bopeep bopper borbor borore bororo breere brocco brocor ceecee cerco- cobber cobbob cocco- cococo coerce coo-er coocoo coopee cooper copper copro- corpre corrop crecco creepo crocco crocer croope croper ecobee ecopop eebree epopee erbree ocreo- oooooo peepee peeper peerce peerer pepero pepper percee percer perere peroor perore perper perree pooper poopoo poorer popopo poporo popper poppop porece pppppp pre-op precor preece preore prober probre procer procop procor proper propre prorec rebbec rebore recope recore recreo reeper repope repper rerobe robber robeco rococo roeper roopee rooper