bbbee be-er beber beebe beffe befur beher behue behuf berbe bereh berhe berre berru beuer beure bheer brebu breef breer brere breu- brrrr bruer bruff bubbe buber buffe bureh burru ebber ebure eeeee efere effer efuru erbbe erber erere eurre febre feere feher ferr- ferre feuer freeh freer frere freur fu-fu h-e-b he-he hebbe hebe- heber heere hefer heffe herre herur heuer heure hhhhh hrere hubbe huber hubur huere huffe huhuh hurbe hureh hurre huuru rebbe reber reefe reere reerh refer reffe reher rehue rere- reree reuer rubee ruber ruere ruffe ruhub uber- ufere uh-ee uh-uh uhhuh uhuru urubu uuuuu