English verb conjugation COULD DUCK

Regular verb: duck - ducked - ducked

Affirmation

Simple form

I could duck
you could duck
he could duck
we could duck
you could duck
they could duck

V-ing form

I could be ducking
you could be ducking
he could be ducking
we could be ducking
you could be ducking
they could be ducking

Perfect

I could have ducked
you could have ducked
he could have ducked
we could have ducked
you could have ducked
they could have ducked

V-ing perfect

I could have been ducking
you could have been ducking
he could have been ducking
we could have been ducking
you could have been ducking
they could have been ducking

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I duck?
could you duck?
could he duck?
could we duck?
could you duck?
could they duck?

V-ing form

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

Perfect

could I have ducked?
could you have ducked?
could he have ducked?
could we have ducked?
could you have ducked?
could they have ducked?

V-ing perfect

could I have been ducking?
could you have been ducking?
could he have been ducking?
could we have been ducking?
could you have been ducking?
could they have been ducking?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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