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