frenchStemmer with words ending in ous and oux

In the french stemmer (version 3.3 of Lucene), I just noticed that the
stemming of words like "écrous" and its singular form "écrou" do not yield
the same stemmed version.

I would expect that stemming most words ending in "ous" and "oux" to "ou"
would be a good solution

Words ending in OUX:

alquifoux bijoux cailloux choux courroux doux epoux extradoux genoux hiboux
houx jaloux joujoux poux redoux ripoux roux saindoux sioux toux tripoux

Words ending in OUS:

absous acajous ainous amadous andalous anjous autodissous bagayous bagous
balaous bambous bantous bayous bazous biclous binious bisous bizous boubous
boukarous bourdalous bous brous burnous cabecous cachous cacous cagous
cajous calalous canaillous canezous cantalous carcajous cariacous caribous
chabanous chabichous chatous chatrous chouchous clous combassous contrefous
coucous coudous cougnous coumarous couroucous cous couscous debous dessous
dissous doudous ecrous emous entrevous filous fitous flous foufous fous
foutous froufrous gabelous gamous garous gazous glouglous gnous gorfous
goudous gourous grigous grisous guenillous hindous houmous iglous indous
kagous kangourous kinkajous koudourrous koudous licous loulous mahous
manchous mandchous manitous manous maous marlous matous matoutous merous
miaous mildious minous mous nandous nounous nous ouassous ourdous pachtous
padous papous patous petitous pichous pilous pioupious pissous pistous
pitous potorous poutous quipous refous relous remous resous rezzous ripous
rocous roudoudous safous sagous sajous sapajous scoubidous sous soussous
spirous tabous tatous telougous tinamous torcous tourlourous tous toutous
tripous trous vaudous verrous vesous voandzous vous voyous wacapous youyous
zazous zouglous zoulous

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