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 couldn't fossilise
you couldn't fossilise
he couldn't fossilise
we couldn't fossilise
you couldn't fossilise
they couldn't fossilise

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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