English verb conjugation COULD FOSSILIZE

Regular verb: fossilize - fossilized - fossilized

Affirmation

Simple form

I could fossilize
you could fossilize
he could fossilize
we could fossilize
you could fossilize
they could fossilize

V-ing form

I could be fossilizing
you could be fossilizing
he could be fossilizing
we could be fossilizing
you could be fossilizing
they could be fossilizing

Perfect

I could have fossilized
you could have fossilized
he could have fossilized
we could have fossilized
you could have fossilized
they could have fossilized

V-ing perfect

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

Negation

Simple form

I couldn't fossilize
you couldn't fossilize
he couldn't fossilize
we couldn't fossilize
you couldn't fossilize
they couldn't fossilize

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fossilize?
could you fossilize?
could he fossilize?
could we fossilize?
could you fossilize?
could they fossilize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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