We must now consider the return of sins which have been taken away by Penance: under which head there are four points of inquiry:

A1 Whether sins which have been taken away by Penance return simply through a subsequent sin?

A2 Whether more specially as regards certain sins they return, in a way, on account of ingratitude?

A3 Whether the debt of punishment remains the same for sins thus returned?

A4 Whether this ingratitude, on account of which sins return, is a special sin?