English verb conjugation COULD SUPPLEMENT

Regular verb: supplement - supplemented - supplemented

Affirmation

Simple form

I could supplement
you could supplement
he could supplement
we could supplement
you could supplement
they could supplement

V-ing form

I could be supplementing
you could be supplementing
he could be supplementing
we could be supplementing
you could be supplementing
they could be supplementing

Perfect

I could have supplemented
you could have supplemented
he could have supplemented
we could have supplemented
you could have supplemented
they could have supplemented

V-ing perfect

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

Negation

Simple form

I could not supplement
you could not supplement
he could not supplement
we could not supplement
you could not supplement
they could not supplement

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I supplement?
could you supplement?
could he supplement?
could we supplement?
could you supplement?
could they supplement?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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