b-r-k bbbee be-er bebek beber beche becke beckh becue beebe beech beeke beher behue beker bekke berbe berck bercu berec bereh berek berhe berk- berke berre berru beuch beuer beure bheer brebu brece brech breck breek breer breke brere breu- brrrr bruce bruch bruck bruer bruke bubbe buber bucek buchu bucku bucur buker bukk- burch burck burcu bureh burek burke burru buruc buruk ccccc cebec ceber cech ceche ceere cerbu cerc- cerce cerec cerer cerke cerre chech check cheek cheer chehr chekc cheke chere cheru cheue chher chubb chuck chueh chuek chur- chure churk churr churu chuuk crebe crece creek creer creke creu- creue cruce cruck cruke crure cubbe cubeb cuber cubub cuche cucuk cuker curce curch curer curre ebber ebure ecker eecke eeeee eheke ekker ekuku ekuru erbbe erber erech erere erkec eruke eucre eurre h-e-b he-he hebbe hebe- heber heche hecke heere heker hekk- herce herek herke herre heruk herur heuch heuer heure hhhhh hkcee hrbek hrere hubbe huber hubur hucch huche hueck huere huhuh huker hurbe hureh hurre huuru kebbe kebek keber kecer keche keech keere kehek kekec kerch kerek kerre kheer khuru khuur kreek kreke kreuk kubek kuber kucer kuche kuchu kucuk kuheh kukec kukur kurbu kurch kureh kurek kurku kurre kuruc kuruk rebbe rebec reber recce reche recke recue recur reece reech reere reerh reher rehue rekke rere- reree reuer rubee ruber rubke rucer ruche ruere ruhub rukke rurec u-cee uber- uceku uchee ucheh uchku uchuu uh-ee uh-uh uhecr uhhuh uhuru ukeke urech urker urubu uruce urucu uuuuu