(reflexive)The second-person plural of the reflexive pronoun, yourselves (addressing many persons); yourself (addressing politely or formally one person).
Usage notes
Note that this pronoun has no nominative form.
If this pronoun is an object of a genitive-requiring postposition, the possessive suffix is not appended to the postposition — because it is already in this pronoun:
teidänkanssanne = with you (addressing many persons or politely or formally one person)
itsenne kanssa = with yourselves (addressing many persons); with yourself (addressing politely or formally one person)