could overlearn
Regular verb: overlearn - overlearned- overlearned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overlearn
you could overlearn
she could overlearn
we could overlearn
you could overlearn
they could overlearn 	I could be overlearning
you could be overlearning
she could be overlearning
we could be overlearning
you could be overlearning
they could be overlearning	I could have overlearned
you could have overlearned
she could have overlearned
we could have overlearned
you could have overlearned
they could have overlearned	I could have been overlearning
you could have been overlearning
she could have been overlearning
we could have been overlearning
you could have been overlearning
they could have been overlearning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not overlearn
you could not overlearn
she could not overlearn
we could not overlearn
you could not overlearn
they could not overlearn 	I could not be overlearning
you could not be overlearning
she could not be overlearning
we could not be overlearning
you could not be overlearning
they could not be overlearning	I could not have overlearned
you could not have overlearned
she could not have overlearned
we could not have overlearned
you could not have overlearned
they could not have overlearned	I could not have been overlearning
you could not have been overlearning
she could not have been overlearning
we could not have been overlearning
you could not have been overlearning
they could not have been overlearning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overlearn?
could you overlearn?
could she overlearn?
could we overlearn?
could you overlearn?
could they overlearn? 	could I be overlearning?
could you be overlearning?
could she be overlearning?
could we be overlearning?
could you be overlearning?
could they be overlearning? 	could I have overlearned?
could you have overlearned?
could she have overlearned?
could we have overlearned?
could you have overlearned?
could they have overlearned? 	could I have been overlearning?
could you have been overlearning?
could she have been overlearning?
could we have been overlearning?
could you have been overlearning?
could they have been overlearning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not overlearn?
could you not overlearn?
could she not overlearn?
could we not overlearn?
could you not overlearn?
could they not overlearn? 	could I not be overlearning?
could you not be overlearning?
could she not be overlearning?
could we not be overlearning?
could you not be overlearning?
could they not be overlearning? 	could I not have overlearned?
could you not have overlearned?
could she not have overlearned?
could we not have overlearned?
could you not have overlearned?
could they not have overlearned? 	could I not have been overlearning?
could you not have been overlearning?
could she not have been overlearning?
could we not have been overlearning?
could you not have been overlearning?
could they not have been overlearning?