Pronoun order depends on which pronouns you're using.
Barbara wants to know how to deal with "you" when it's part of a compound subject or the compound object of a preposition. Should she say, "You and John are invited to the party" or "John and you are invited to the party"?
Barbara should say, "You and John are invited" because all pronouns (except "I" and "me") normally come before the noun in compounds:
Compound subject: You and Squiggly should give up chocolate.
Compound subject: She and Bob worked out on the treadmill.
Compound object: Aardvark sent you and Juan two broccoli recipes.
Compound object: Geoff gave him and Lisa a blender.
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