query: embed.html#SELECT ?l ?lemma ?length WHERE {
     ?l a ontolex:LexicalEntry ; dct:language ?language ;
          wikibase:lemma ?lemma .
    ?language wdt:P218 'fr' .
    FILTER REGEX ( ?lemma, "[aàâ]")
    FILTER REGEX ( ?lemma, "[eéèêë]")
    FILTER REGEX ( ?lemma, "[iîï]")
    FILTER REGEX ( ?lemma, "[oôö]")
    FILTER REGEX ( ?lemma, "[uûü]")
    FILTER REGEX ( ?lemma, "[yÿ]")
    BIND ( strlen(?lemma) as ?length )
  }
  ORDER BY ?length