Which two pronouns can be used both as a subject pronoun and as an object pronoun?

The personal pronouns you and it can be used as a subject or an object in a sentence.

Examples:

You can take the five o'clock train. (subject of the sentence)

I will meet you at the station. (direct object of the verb 'will meet')

It will be more relaxing than driving. (subject of the sentence)

If the train is late, I will wait for it. (object of the preposition 'for')