English verb conjugation
CAN CURSE

Regular verb: curse - cursed - cursed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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