English verb conjugation COULD CHALK

Regular verb: chalk - chalked - chalked

Affirmation

Simple form

I could chalk
you could chalk
he could chalk
we could chalk
you could chalk
they could chalk

V-ing form

I could be chalking
you could be chalking
he could be chalking
we could be chalking
you could be chalking
they could be chalking

Perfect

I could have chalked
you could have chalked
he could have chalked
we could have chalked
you could have chalked
they could have chalked

V-ing perfect

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

Negation

Simple form

I could not chalk
you could not chalk
he could not chalk
we could not chalk
you could not chalk
they could not chalk

V-ing form

I could not be chalking
you could not be chalking
he could not be chalking
we could not be chalking
you could not be chalking
they could not be chalking

Perfect

I could not have chalked
you could not have chalked
he could not have chalked
we could not have chalked
you could not have chalked
they could not have chalked

V-ing perfect

I could not have been chalking
you could not have been chalking
he could not have been chalking
we could not have been chalking
you could not have been chalking
they could not have been chalking

Interrogative form

Simple form

could I chalk?
could you chalk?
could he chalk?
could we chalk?
could you chalk?
could they chalk?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not chalk?
could you not chalk?
could he not chalk?
could we not chalk?
could you not chalk?
could they not chalk?

V-ing form

could I not be chalking?
could you not be chalking?
could he not be chalking?
could we not be chalking?
could you not be chalking?
could they not be chalking?

Perfect

could I not have chalked?
could you not have chalked?
could he not have chalked?
could we not have chalked?
could you not have chalked?
could they not have chalked?

V-ing perfect

could I not have been chalking?
could you not have been chalking?
could he not have been chalking?
could we not have been chalking?
could you not have been chalking?
could they not have been chalking?

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