English verb conjugation COULD BOX

Regular verb: box - boxed - boxed

Affirmation

Simple form

I could box
you could box
she could box
we could box
you could box
they could box

V-ing form

I could be boxing
you could be boxing
she could be boxing
we could be boxing
you could be boxing
they could be boxing

Perfect

I could have boxed
you could have boxed
she could have boxed
we could have boxed
you could have boxed
they could have boxed

V-ing perfect

I could have been boxing
you could have been boxing
she could have been boxing
we could have been boxing
you could have been boxing
they could have been boxing

Negation

Simple form

I could not box
you could not box
she could not box
we could not box
you could not box
they could not box

V-ing form

I could not be boxing
you could not be boxing
she could not be boxing
we could not be boxing
you could not be boxing
they could not be boxing

Perfect

I could not have boxed
you could not have boxed
she could not have boxed
we could not have boxed
you could not have boxed
they could not have boxed

V-ing perfect

I could not have been boxing
you could not have been boxing
she could not have been boxing
we could not have been boxing
you could not have been boxing
they could not have been boxing

Interrogative form

Simple form

could I box?
could you box?
could she box?
could we box?
could you box?
could they box?

V-ing form

could I be boxing?
could you be boxing?
could she be boxing?
could we be boxing?
could you be boxing?
could they be boxing?

Perfect

could I have boxed?
could you have boxed?
could she have boxed?
could we have boxed?
could you have boxed?
could they have boxed?

V-ing perfect

could I have been boxing?
could you have been boxing?
could she have been boxing?
could we have been boxing?
could you have been boxing?
could they have been boxing?

Interro-negative form

Simple form

could I not box?
could you not box?
could she not box?
could we not box?
could you not box?
could they not box?

V-ing form

could I not be boxing?
could you not be boxing?
could she not be boxing?
could we not be boxing?
could you not be boxing?
could they not be boxing?

Perfect

could I not have boxed?
could you not have boxed?
could she not have boxed?
could we not have boxed?
could you not have boxed?
could they not have boxed?

V-ing perfect

could I not have been boxing?
could you not have been boxing?
could she not have been boxing?
could we not have been boxing?
could you not have been boxing?
could they not have been boxing?

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