could scar
Regular verb: scar - scarred- scarred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could scar
you could scar
she could scar
we could scar
you could scar
they could scar 	I could be scarring
you could be scarring
she could be scarring
we could be scarring
you could be scarring
they could be scarring	I could have scarred
you could have scarred
she could have scarred
we could have scarred
you could have scarred
they could have scarred	I could have been scarring
you could have been scarring
she could have been scarring
we could have been scarring
you could have been scarring
they could have been scarring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't scar
you couldn't scar
she couldn't scar
we couldn't scar
you couldn't scar
they couldn't scar 	I couldn't be scarring
you couldn't be scarring
she couldn't be scarring
we couldn't be scarring
you couldn't be scarring
they couldn't be scarring	I couldn't have scarred
you couldn't have scarred
she couldn't have scarred
we couldn't have scarred
you couldn't have scarred
they couldn't have scarred	I couldn't have been scarring
you couldn't have been scarring
she couldn't have been scarring
we couldn't have been scarring
you couldn't have been scarring
they couldn't have been scarring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I scar?
could you scar?
could she scar?
could we scar?
could you scar?
could they scar? 	could I be scarring?
could you be scarring?
could she be scarring?
could we be scarring?
could you be scarring?
could they be scarring? 	could I have scarred?
could you have scarred?
could she have scarred?
could we have scarred?
could you have scarred?
could they have scarred? 	could I have been scarring?
could you have been scarring?
could she have been scarring?
could we have been scarring?
could you have been scarring?
could they have been scarring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I scar?
couldn't you scar?
couldn't she scar?
couldn't we scar?
couldn't you scar?
couldn't they scar? 	couldn't I be scarring?
couldn't you be scarring?
couldn't she be scarring?
couldn't we be scarring?
couldn't you be scarring?
couldn't they be scarring? 	couldn't I have scarred?
couldn't you have scarred?
couldn't she have scarred?
couldn't we have scarred?
couldn't you have scarred?
couldn't they have scarred? 	couldn't I have been scarring?
couldn't you have been scarring?
couldn't she have been scarring?
couldn't we have been scarring?
couldn't you have been scarring?
couldn't they have been scarring?