Lay members of the order said in place of the psalms the Our Father (Pater). The 150 psalms/paters were subdivided in groups of fifty. During the twelfth-thirteen centuries, the Hail Mary was added.

2676-2677 Hail, Mary, full of grace, the Lord is with thee; blessed are thou among women, and blessed is the fruit of thy womb, Jesus. Holy Mary, Mother of God, pray for us sinners, now and at the ...