1 -3 | 3 -4 | 4 -7 | 7 -Bo | Bo-Ch | Ch-C’ | Da-Du | Du-Fa | Fa-Gâ | Gâ-Gâ | Gâ-La | La-Mu | My-Pi | Pi-Pr | Pr-Ro | Ro-Ta | Ta-Un | Un-Un | Un-Éc | Él-Œu