Mêmes voyelles que diffuse
bibus, 
bidule, 
biffu, 
biffure, 
bismuth, 
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bitture, 
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ichthus, 
ictus, 
illustre, 
immune, 
inule, 
issu, 
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linus, 
linux, 
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minus, 
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pyrrhus, 
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virus, 
vistule, 
visues, ....