could underscore
Regular verb: underscore - underscored- underscored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could underscore
you could underscore
she could underscore
we could underscore
you could underscore
they could underscore 	I could be underscoring
you could be underscoring
she could be underscoring
we could be underscoring
you could be underscoring
they could be underscoring	I could have underscored
you could have underscored
she could have underscored
we could have underscored
you could have underscored
they could have underscored	I could have been underscoring
you could have been underscoring
she could have been underscoring
we could have been underscoring
you could have been underscoring
they could have been underscoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not underscore
you could not underscore
she could not underscore
we could not underscore
you could not underscore
they could not underscore 	I could not be underscoring
you could not be underscoring
she could not be underscoring
we could not be underscoring
you could not be underscoring
they could not be underscoring	I could not have underscored
you could not have underscored
she could not have underscored
we could not have underscored
you could not have underscored
they could not have underscored	I could not have been underscoring
you could not have been underscoring
she could not have been underscoring
we could not have been underscoring
you could not have been underscoring
they could not have been underscoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I underscore?
could you underscore?
could she underscore?
could we underscore?
could you underscore?
could they underscore? 	could I be underscoring?
could you be underscoring?
could she be underscoring?
could we be underscoring?
could you be underscoring?
could they be underscoring? 	could I have underscored?
could you have underscored?
could she have underscored?
could we have underscored?
could you have underscored?
could they have underscored? 	could I have been underscoring?
could you have been underscoring?
could she have been underscoring?
could we have been underscoring?
could you have been underscoring?
could they have been underscoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not underscore?
could you not underscore?
could she not underscore?
could we not underscore?
could you not underscore?
could they not underscore? 	could I not be underscoring?
could you not be underscoring?
could she not be underscoring?
could we not be underscoring?
could you not be underscoring?
could they not be underscoring? 	could I not have underscored?
could you not have underscored?
could she not have underscored?
could we not have underscored?
could you not have underscored?
could they not have underscored? 	could I not have been underscoring?
could you not have been underscoring?
could she not have been underscoring?
could we not have been underscoring?
could you not have been underscoring?
could they not have been underscoring?