English verb conjugation COULD BOARD

Regular verb: board - boarded - boarded

Affirmation

Simple form

I could board
you could board
she could board
we could board
you could board
they could board

V-ing form

I could be boarding
you could be boarding
she could be boarding
we could be boarding
you could be boarding
they could be boarding

Perfect

I could have boarded
you could have boarded
she could have boarded
we could have boarded
you could have boarded
they could have boarded

V-ing perfect

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

Negation

Simple form

I could not board
you could not board
she could not board
we could not board
you could not board
they could not board

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I board?
could you board?
could she board?
could we board?
could you board?
could they board?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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