Italian to English Other Law (general)

In a family status certificate there is a table reading as follows:
RP Nominativo SC Data nascita Luogo Nascita

I heve decrypted RP as relazioni personali (and there is MG (moglie), FG (figlia) etc. below). Below SC which I understand as stato civile there are three different abbreviations: CO (for the certificate holder), CA (for the wife) and NE (for daughters). Could you please help me find the meaning of these abbreviations?