English verb conjugation COULD CHECKMATE

Regular verb: checkmate - checkmated - checkmated

Affirmation

Simple form

I could checkmate
you could checkmate
she could checkmate
we could checkmate
you could checkmate
they could checkmate

V-ing form

I could be checkmating
you could be checkmating
she could be checkmating
we could be checkmating
you could be checkmating
they could be checkmating

Perfect

I could have checkmated
you could have checkmated
she could have checkmated
we could have checkmated
you could have checkmated
they could have checkmated

V-ing perfect

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

Negation

Simple form

I could not checkmate
you could not checkmate
she could not checkmate
we could not checkmate
you could not checkmate
they could not checkmate

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I checkmate?
could you checkmate?
could she checkmate?
could we checkmate?
could you checkmate?
could they checkmate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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