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