b-r-k bluhm blurb blurr brmmm brrrr bruch bruck bruhl brull brumm buchu bucku bucum bucur bukk- bulb- bulch bulck bull- bulul bumbu burch burck burcu burru buruc buruk ccccc cclcm ccrcl chlum chubb chuck chull chumb chur- churk churl churm churr churu chuuk chuul clubb cluck clumb clurr cruck crull crumb cubub cucuk culch cullu culur cumbu cumm- curch curll curlu hhhhh hkhrm hubur hucch hucul huhuh hulch humur hurll hurm hurum huuru khull khumb khuru khuur krull krumm kubul kuchl kuchu kucuk kukur kullu kulul kulur kumbh kumlu kumru kumuk kurbu kurch kurku kurlu kuruc kuruk lluch lubur luchu lucur luluc lulul lumb- lurch lurck mbulu mburu mchum mmccc mmccl mmhmm mmmcc mmmmm mrcub muchu mucum mucur mukul mukur mulch mulur mumcu mumlu mummu murch murck murrh murru muruk murum rhumb rucul ruhub rummu uchku uchuu uh-uh uhhuh uhuru ullur ulrum ululu uluru umblu umhum urubu urucu uuuuu