could curse
Regular verb: curse - cursed- cursed

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