=sierreur(RECHERCHE(PETITE.VALEUR($B$3:$B$11;A16);$B$3:$B$11;$B$3:$B$11);"")
=SI(ESTERREUR(RECHERCHE(PETITE.VALEUR($B$3:$B$11;A16);$B$3:$B$11;$B$3:$B$11));"";RECHERCHE(PETITE.VALEUR($B$3:$B$11;A16);$B$3:$B$11;$B$3:$B$11))
=SI(ESTNUM(RECHERCHE(PETITE.VALEUR($B$3:$B$11;A16);$B$3:$B$11;$B$3:$B$11));RECHERCHE(PETITE.VALEUR($B$3:$B$11;A16);$B$3:$B$11;$B$3:$B$11);"")