bfrog bibbo bibio bibri biffi biffo bifor big-i bigif bigig bigoo birgi bo-bo bobbi bobr bobri boffi boffo bogof bogor boiro borbo borgo borio boro- boroo borro brigg brigi brobo brrrr fibr- fibro fiori firgo fogbo foggo foir- forgo forio forro frigg frigo friog ggobi gi-fi gibbi gibi- go-go go-oo gobbi gobbo gobig gobio gobir goffi gofio gofor gogoi gogro goibo goobi goobo gooff gorgo gorir griff grifo grigg groff grogg groof grrrr ibibo ibogo if-- iggri igigi iiiii ioooi ioooo iorio irobo irori o-r-b oboro offir offof ofori oggif ogiri ogogo ooioo ooooo orfor oribi origi origo orobo orrgo ri-fi ribbi ribo- rig-i rigio rigor ro-ro robbi robbo robo- robor rofor rogoi