English verb conjugation
COULD CONJUGATE

Regular verb: conjugate - conjugated - conjugated

Affirmation

Simple form	V-ing form
I could conjugate you could conjugate she could conjugate we could conjugate you could conjugate they could conjugate	I could be conjugating you could be conjugating she could be conjugating we could be conjugating you could be conjugating they could be conjugating
Perfect	V-ing perfect
I could have conjugated you could have conjugated she could have conjugated we could have conjugated you could have conjugated they could have conjugated	I could have been conjugating you could have been conjugating she could have been conjugating we could have been conjugating you could have been conjugating they could have been conjugating

Negation

Simple form	V-ing form
I could not conjugate you could not conjugate she could not conjugate we could not conjugate you could not conjugate they could not conjugate	I could not be conjugating you could not be conjugating she could not be conjugating we could not be conjugating you could not be conjugating they could not be conjugating
Perfect	V-ing perfect
I could not have conjugated you could not have conjugated she could not have conjugated we could not have conjugated you could not have conjugated they could not have conjugated	I could not have been conjugating you could not have been conjugating she could not have been conjugating we could not have been conjugating you could not have been conjugating they could not have been conjugating

Interrogative form

Simple form	V-ing form
could I conjugate? could you conjugate? could she conjugate? could we conjugate? could you conjugate? could they conjugate?	could I be conjugating? could you be conjugating? could she be conjugating? could we be conjugating? could you be conjugating? could they be conjugating?
Perfect	V-ing perfect
could I have conjugated? could you have conjugated? could she have conjugated? could we have conjugated? could you have conjugated? could they have conjugated?	could I have been conjugating? could you have been conjugating? could she have been conjugating? could we have been conjugating? could you have been conjugating? could they have been conjugating?

Interro-negative form

Simple form	V-ing form
could I not conjugate? could you not conjugate? could she not conjugate? could we not conjugate? could you not conjugate? could they not conjugate?	could I not be conjugating? could you not be conjugating? could she not be conjugating? could we not be conjugating? could you not be conjugating? could they not be conjugating?
Perfect	V-ing perfect
could I not have conjugated? could you not have conjugated? could she not have conjugated? could we not have conjugated? could you not have conjugated? could they not have conjugated?	could I not have been conjugating? could you not have been conjugating? could she not have been conjugating? could we not have been conjugating? could you not have been conjugating? could they not have been conjugating?