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img/section 1/triangle_haut_pointilles.png img/section 1/rectangle_milieu_pointilles.png

img/section 2/triangle_haut.png img/section 2/rectangle_milieu.png img/section 2/rectangle_bas.png

    img/section 3/fleche_HG.png img/section 3/fleche_HD.png img/section 3/fleche_MHG.png img/section 3/fleche_MMG.png img/section 3/fleche_MBG.png img/section 3/fleche_MHD.png img/section 3/fleche_MMD.png img/section 3/fleche_MBD.png

    img/section 4/flux_1.png img/section 4/flux_2.png img/section 4/flux_3.png img/section 4/flux_4.png