Function les_nombres(cel As String, nombre)
Dim i&, T, x$
For i = 1 To Len(cel): Mid(cel, i, 1) = IIf(Not IsNumeric(Mid(cel, i, 1)), " ", Mid(cel, i, 1)): Next
cel = Application.Trim(cel)
T = Split(cel, " ")
For i = 0 To UBound(T): x = x & IIf(Len(T(i)) = nombre, T(i) & " ", ""): Next
les_nombres = IIf(x = 0, "", x)
End Function