<Li> Formula A - usually called the Confiteor and contains a mea culpa </Li> <Ul> <Li> Formula B - a short dialogue between the priest and congregation . </Li> </Ul> <Li> Formula B - a short dialogue between the priest and congregation . </Li> <Ul> <Li> Formula C - a dialogue said or sung by the deacon or priest, or sung by the cantor . It contains three tropes, each followed by and acclamation (Kyrie or Christe Eleison) </Li> </Ul>

What is the penitential act in the catholic church