Using Direct and Indirect Object Pronouns Together

Una carta is the direct object and la is the direct object pronoun. These are the forms: Me Me Te You (informal) Lo Him, You (formal), It (masculine) La Her, You (formal), It (femine) Nos Us Os You all (only used in Spain) Los Them, You all (masculine) Las Them, You all (feminine) In Spanish, the D.O.P. that replaces the direct object when it is a noun must agree in number and gender of the noun. ................
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