bbbbbb blobby blolly bloomy blubbo blublu bluppo bo-hoo bobbly bohoyo bolbol bolobo bololo bombom booboo boohoo boom-o bopolu boubou boulby boulou bubbly bububu buholo bulbo- bulbul bullou bulolo bumboo bumppo buoyup h-bomb hlllyh ho-hum hobbly hoblob hohloh hohoho holhol holloo hollop hollum hollym holmul hooboy hoohoo hoolly hoopoo hop-up hoplo- hubbly hubbub hububb huh-uh hulloo huluhu humbly humbul humhub humhum hummum hummyl hypho- l-bomb lobolo lollop lollum lolobo lomlom looloo loomup lopho- loplop loulou luboml lumbo- lymph- lymphy mbombo mbomou mm-hmm mmmbop moholl moholm mohuhu mollom molloy molopo moobol moomoo moopoo mop-up moully mpombo muhuhu mullum mulmul mumbly muumuu mymymy myobu myohmy myomo- ohmymy ohohoh ohpooh oohooh oomphy oooooo oupoyo phlppl phobo- phyll- phyllo phylo- phylum ploppy plumb- plumbo plumby plummy plumpy plyboo polohy polpol polyol pomolo pompom poopoo pop-up popopo popoyo popply poppop populo poulpy poupou pppppp pubol pullup pulmo- puloly pumpup ubombo uh-huh um-hum umbyll yo-pop yohoho yoohoo youbou yoyoyo yummly yumyum