Abundances at z > 1000 au for a streamline anchored at 0.15 au in the disk as a function of the mass-loss rate for various dust fractions. For Ṁ_w ≥ 5 × 10⁻⁷ M_⊙ yr⁻¹, the mass of the central object is 0.1 M_⊙ (Class 0 model) and 0.5 M_⊙ for lower mass-loss rates (Class I and II models). Dust-free models are plotted in solid lines, and dust-poor models with Q∕Q_ref = 10⁻³, 10⁻², and 0.1 are plotted in dashed, dashed-dotted, and dotted lines as indicated in each panel, respectively. Horizontal black dashed lines indicate the elemental abundance of carbon (panels on CO and C), silicon (panel on SiO), and oxygen (panel on H₂O).