Here's what rhymes with cauou.
woo wou wu whew to who you do two new too due knew du u coup qu shoe zu dew lieu shew su sue tu vous chew deux fu lu rue zoo bu hu ju jus ku loo mu nu peu pu seu shu sou vu yew yu boo chou chu coo cou doo ewe feu gu ru shou thu tue vou goo moo pooh poo shoo gnu roux thew through few true view blue drew grew que crew threw blew flew q anew canoe clue cue glue hue queue cu flue slew stew adieu ado brew flu pew thru beaucoup fue hew mieux shrew tzu vue clew mew kazoo slue phew wazoo achoo into pursue screw renew undue accrue ensue taboo undo overdue piu skew tattoo eschew outdo sprue vnto overdo redo strew cockatoo halloo spew valuer foreknew zebu overshoe booboo atishoo review overview withdrew avenue bamboo debut subdue untrue caribou jusqu overthrew kangaroo revue shampoo sinew askew imbue outgrew bugaboo endue fondue indue peekaboo buckaroo muumuu overflew overdrew overgrew regrew revenue hitherto residue rendezvous retinue construe ballyhoo honeydew marabou bestrew prevue interview barbecue barbeque superglue hullabaloo misconstrue