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