English verb conjugation
COULD OVERLEARN

Regular verb: overlearn - overlearned - overlearned

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I couldn't overlearn you couldn't overlearn she couldn't overlearn we couldn't overlearn you couldn't overlearn they couldn't overlearn	I couldn't be overlearning you couldn't be overlearning she couldn't be overlearning we couldn't be overlearning you couldn't be overlearning they couldn't be overlearning
Perfect	V-ing perfect
I couldn't have overlearned you couldn't have overlearned she couldn't have overlearned we couldn't have overlearned you couldn't have overlearned they couldn't have overlearned	I couldn't have been overlearning you couldn't have been overlearning she couldn't have been overlearning we couldn't have been overlearning you couldn't have been overlearning they couldn't have been overlearning

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
couldn't I overlearn? couldn't you overlearn? couldn't she overlearn? couldn't we overlearn? couldn't you overlearn? couldn't they overlearn?	couldn't I be overlearning? couldn't you be overlearning? couldn't she be overlearning? couldn't we be overlearning? couldn't you be overlearning? couldn't they be overlearning?
Perfect	V-ing perfect
couldn't I have overlearned? couldn't you have overlearned? couldn't she have overlearned? couldn't we have overlearned? couldn't you have overlearned? couldn't they have overlearned?	couldn't I have been overlearning? couldn't you have been overlearning? couldn't she have been overlearning? couldn't we have been overlearning? couldn't you have been overlearning? couldn't they have been overlearning?