Spanish Prepositional Pronouns

Prepositional pronouns in Spanish are identical to subject pronouns (él, ella, nosotros, ellos, etc.) except in the first and second person singular: 'yo' becomes 'mí' (with an accent to distinguish it from possessive 'mi') and 'tú' becomes 'ti'. When combined with the preposition 'con' (with), these forms contract into unique single words: 'conmigo' (with me) and 'contigo' (with you).