English verb conjugation COULD FOSSILISE

Regular verb: fossilise - fossilised - fossilised

Affirmation

Simple form

I could fossilise
you could fossilise
he could fossilise
we could fossilise
you could fossilise
they could fossilise

V-ing form

I could be fossilising
you could be fossilising
he could be fossilising
we could be fossilising
you could be fossilising
they could be fossilising

Perfect

I could have fossilised
you could have fossilised
he could have fossilised
we could have fossilised
you could have fossilised
they could have fossilised

V-ing perfect

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

Negation

Simple form

I could not fossilise
you could not fossilise
he could not fossilise
we could not fossilise
you could not fossilise
they could not fossilise

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fossilise?
could you fossilise?
could he fossilise?
could we fossilise?
could you fossilise?
could they fossilise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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