bbbee be-er be-ro beber beebe beeri beher behie behir behue beibi beier beihe beihu beire beoir beour berbe bereh berei berhe berie berio beriu berob beroe beror berre berri berru beuer beure bheer bheri bhooi bhore bhour bibbe bibbo biber bibie bibio bibri biebe biere bieri biher bihor bihou biore bioue birie birou birur biure bo-bo bo-ho bobbi bobr bobre bobri boero boeur bohor bohri boibe boier boire boiro booer boore booru borbo boree borer borio boro- boroo borou borre borro bouee bouer boure bouri brebu breer breo- brere breu- bribe brier briou brobo broer broue brrrr bruer bruiu bruri bubbe buber buire buoho bureh burie burio buroo burri burro burru ebber ebbie ebibe eboue ebrio ebure eeeee eerie ehire eieio eirie eorre erbbe erber erere erier erio- eroor erore error eubie eubro euro- eurre h-bio h-e-b h-iib he-he he-ro hebbe hebe- hebei heber hebri heeii heere heihe heire heore herei herie heroe herre herro herur heuer heure hhhhh hhour hi-hi hibhi hibob hibor hibri hibur hier- hiero hiree hirer hiroe hiroi hiroo hirur ho-ho ho-oh hobie hoboe hobor hobro hobub hoeie hoeri hohoe hooer hooie hoore hoori horeb horhe horie horii horio horre horro horru hou-i houir houre houri hrere hubbe hubei huber hubie hubur huere huhuh huihe huire huobi hurbe hureh hurre hurri huuru i-beo ibbur ibero ibibo ibore ieiri ierei ieroe iherb ihere iiiee iiiii ioooi ioooo iorio irobo irori irour iurie o-r-b obeie obhor oboro oboue obreb oeiro oh-oh oheir ohiou ohour ohrio ohrob oo-er ooher ooioo ooooh ooooo oorie orebi oreo- oreoi orere orero orhei oribe oribi orobe orobo oroer orube oruro ouihi ouir- ouoro oure- ourie rebbe reber reere reerh reher rehoe rehri rehue rere- reree rerir rerob reuer reuir rheo- rhoeo ribbi riber ribie ribo- ririe riuer ro-ro robbe robbi robbo rober robie robo- robor robur roero rohob rohri rohru rooer roohi roore rooue rorbu rorer rouer rouhe roure rubbi rubee ruber rubie rubio rubor ruere ruhub ruiru uber- ubirr ubobo uh-ee uh-oh uh-uh uhhoh uhhuh uhuru uiro uouee ureo- uribe uroob urour urubu ururi uuuuu