A third view: operating grace effects the first deliberate act
Thesis L. Others, however, think that operating grace means the grace that produces in a person the first act of deliberate will, such as conversion, whether from unbelief to faith or from other sins to repentance.
By cooperating grace they mean the grace that produces the later acts of the will, such as willing to pray, willing to do good works and the like. On this view operating grace is simply special, efficacious help with regard to the will's first act, and cooperating grace is likewise special and efficacious help with regard to the acts that follow.
Latin
L. At vero sunt alii qui per gratiam operantem designari putant eam, quae efficit in homine primum actum deliberatae voluntatis: qualis est conversio, sive ab infidelitate ad fidem, sive a peccatis caeteris ad poenitentiam. Per gratiam vero cooperantem intelligunt illam quae efficit consequentes actus voluntatis: quales sunt velle orare, velle bona opera facere, & alii similes. Ita ut gratia operans nihil sit aliud quam auxilium speciale efficax respectu primi actus voluntatis: gratia vero cooperans sit auxilium speciale efficax quoque, respectu actuum sequentium.