English verb conjugation COULD BOARD

Regular verb: board - boarded - boarded

Affirmation

Simple form

I could board
you could board
he could board
we could board
you could board
they could board

V-ing form

I could be boarding
you could be boarding
he could be boarding
we could be boarding
you could be boarding
they could be boarding

Perfect

I could have boarded
you could have boarded
he 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
he could have been boarding
we could have been boarding
you could have been boarding
they could have been boarding

Negation

Simple form

I couldn't board
you couldn't board
he couldn't board
we couldn't board
you couldn't board
they couldn't board

V-ing form

I couldn't be boarding
you couldn't be boarding
he couldn't be boarding
we couldn't be boarding
you couldn't be boarding
they couldn't be boarding

Perfect

I couldn't have boarded
you couldn't have boarded
he couldn't have boarded
we couldn't have boarded
you couldn't have boarded
they couldn't have boarded

V-ing perfect

I couldn't have been boarding
you couldn't have been boarding
he couldn't have been boarding
we couldn't have been boarding
you couldn't have been boarding
they couldn't have been boarding

Interrogative form

Simple form

could I board?
could you board?
could he board?
could we board?
could you board?
could they board?

V-ing form

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

Perfect

could I have boarded?
could you have boarded?
could he 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 he have been boarding?
could we have been boarding?
could you have been boarding?
could they have been boarding?

Interro-negative form

Simple form

couldn't I board?
couldn't you board?
couldn't he board?
couldn't we board?
couldn't you board?
couldn't they board?

V-ing form

couldn't I be boarding?
couldn't you be boarding?
couldn't he be boarding?
couldn't we be boarding?
couldn't you be boarding?
couldn't they be boarding?

Perfect

couldn't I have boarded?
couldn't you have boarded?
couldn't he have boarded?
couldn't we have boarded?
couldn't you have boarded?
couldn't they have boarded?

V-ing perfect

couldn't I have been boarding?
couldn't you have been boarding?
couldn't he have been boarding?
couldn't we have been boarding?
couldn't you have been boarding?
couldn't they have been boarding?

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