Rule reminder
Unstressed pronouns (mi, ti, lo, la, gli, le, ci, vi) go before the verb in neutral sentences. Tonic pronouns (me, te, lui, lei, noi, voi, loro) are used for emphasis, contrast, after 'anche/nemmeno/solo/proprio', and after prepositions.
___ conosco da anni. (I've known him for years — neutral)