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blurb blurr brrrr brull brunn bruun bruzz bulb- bull- bulul bulun bunun bunzl burn- burru burun buzzr lubun lubur lubz lulul lurun luzzu nu-nu nunun nurlu nurun nuzul ullur ululu uluru unnun unnur unrun unurn urubu uuuuu zu-zu zzzzz

bbbbbb blublu brubru bububu bulbul burbur lunlun lurulu nurulu unblur unburn unlull

bbbbbbb bullrun burunlu

bbbbbbbb buruburu buzzbuzz

buln-buln runrunrun uzunburun

buzzbuzzbuzz

buzz-buzz-buzz

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