English verb conjugation COULD CLERK

Regular verb: clerk - clerked - clerked

Affirmation

Simple form

I could clerk
you could clerk
he could clerk
we could clerk
you could clerk
they could clerk

V-ing form

I could be clerking
you could be clerking
he could be clerking
we could be clerking
you could be clerking
they could be clerking

Perfect

I could have clerked
you could have clerked
he could have clerked
we could have clerked
you could have clerked
they could have clerked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I clerk?
could you clerk?
could he clerk?
could we clerk?
could you clerk?
could they clerk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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