English verb conjugation
COULD CURSE

Regular verb: curse - cursed - cursed

Affirmation

Simple form	V-ing form
I could curse you could curse he could curse we could curse you could curse they could curse	I could be cursing you could be cursing he could be cursing we could be cursing you could be cursing they could be cursing
Perfect	V-ing perfect
I could have cursed you could have cursed he could have cursed we could have cursed you could have cursed they could have cursed	I could have been cursing you could have been cursing he could have been cursing we could have been cursing you could have been cursing they could have been cursing

Negation

Simple form	V-ing form
I couldn't curse you couldn't curse he couldn't curse we couldn't curse you couldn't curse they couldn't curse	I couldn't be cursing you couldn't be cursing he couldn't be cursing we couldn't be cursing you couldn't be cursing they couldn't be cursing
Perfect	V-ing perfect
I couldn't have cursed you couldn't have cursed he couldn't have cursed we couldn't have cursed you couldn't have cursed they couldn't have cursed	I couldn't have been cursing you couldn't have been cursing he couldn't have been cursing we couldn't have been cursing you couldn't have been cursing they couldn't have been cursing

Interrogative form

Simple form	V-ing form
could I curse? could you curse? could he curse? could we curse? could you curse? could they curse?	could I be cursing? could you be cursing? could he be cursing? could we be cursing? could you be cursing? could they be cursing?
Perfect	V-ing perfect
could I have cursed? could you have cursed? could he have cursed? could we have cursed? could you have cursed? could they have cursed?	could I have been cursing? could you have been cursing? could he have been cursing? could we have been cursing? could you have been cursing? could they have been cursing?

Interro-negative form

Simple form	V-ing form
couldn't I curse? couldn't you curse? couldn't he curse? couldn't we curse? couldn't you curse? couldn't they curse?	couldn't I be cursing? couldn't you be cursing? couldn't he be cursing? couldn't we be cursing? couldn't you be cursing? couldn't they be cursing?
Perfect	V-ing perfect
couldn't I have cursed? couldn't you have cursed? couldn't he have cursed? couldn't we have cursed? couldn't you have cursed? couldn't they have cursed?	couldn't I have been cursing? couldn't you have been cursing? couldn't he have been cursing? couldn't we have been cursing? couldn't you have been cursing? couldn't they have been cursing?