From the Maronite Penance Service, this is the opening hymn:
I yearn for your pardon, O Lord,
Give me tears to repent in this season of Advent
Lord have mercy.
I beg for your favors, O Lord,
For your mercy I thirst, for your kindness and love.
Lord have mercy.
Against you, O Lord, I have sinned,
Hear the cry of my voice, turn your ear to my prayer.
Lord forgive me.
O wash me O Lord from my guilt
Purify me and I shall be whiter than snow.
Lord forgive me.
Another excellent resource is the following which has been given an imprimatur.
thanks.