English verb conjugation COULD COMBUST

Regular verb: combust - combusted - combusted

Affirmation

Simple form

I could combust
you could combust
he could combust
we could combust
you could combust
they could combust

V-ing form

I could be combusting
you could be combusting
he could be combusting
we could be combusting
you could be combusting
they could be combusting

Perfect

I could have combusted
you could have combusted
he could have combusted
we could have combusted
you could have combusted
they could have combusted

V-ing perfect

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

Negation

Simple form

I could not combust
you could not combust
he could not combust
we could not combust
you could not combust
they could not combust

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I combust?
could you combust?
could he combust?
could we combust?
could you combust?
could they combust?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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