ðeɪ wɜː mˈoʊst ˈɔfən jˈuːzd ɪnðə tɹˈaɪæŋɡəl nˈæntstˈʊɹz, tˈʊɹzbˈoːɹdoʊ ænd bˈoːɹdoʊlˌæ ɹɑːʃˈɛlnˈænts.
They were most often used in the triangle Nantes-Tours, Tours-Bordeaux and Bordeaux-La Rochelle-Nantes.