I can fossilize you can fossilize she can fossilize we can fossilize you can fossilize they can fossilize
V-ing form
I can be fossilizing you can be fossilizing she can be fossilizing we can be fossilizing you can be fossilizing they can be fossilizing
Perfect
I can have fossilized you can have fossilized she can have fossilized we can have fossilized you can have fossilized they can have fossilized
V-ing perfect
I can have been fossilizing you can have been fossilizing she can have been fossilizing we can have been fossilizing you can have been fossilizing they can have been fossilizing
Negation
Simple form
I cannot fossilize you cannot fossilize she cannot fossilize we cannot fossilize you cannot fossilize they cannot fossilize
V-ing form
I cannot be fossilizing you cannot be fossilizing she cannot be fossilizing we cannot be fossilizing you cannot be fossilizing they cannot be fossilizing
Perfect
I cannot have fossilized you cannot have fossilized she cannot have fossilized we cannot have fossilized you cannot have fossilized they cannot have fossilized
V-ing perfect
I cannot have been fossilizing you cannot have been fossilizing she cannot have been fossilizing we cannot have been fossilizing you cannot have been fossilizing they cannot have been fossilizing
Interrogative form
Simple form
can I fossilize? can you fossilize? can she fossilize? can we fossilize? can you fossilize? can they fossilize?
V-ing form
can I be fossilizing? can you be fossilizing? can she be fossilizing? can we be fossilizing? can you be fossilizing? can they be fossilizing?
Perfect
can I have fossilized? can you have fossilized? can she have fossilized? can we have fossilized? can you have fossilized? can they have fossilized?
V-ing perfect
can I have been fossilizing? can you have been fossilizing? can she have been fossilizing? can we have been fossilizing? can you have been fossilizing? can they have been fossilizing?
Interro-negative form
Simple form
can I not fossilize? can you not fossilize? can she not fossilize? can we not fossilize? can you not fossilize? can they not fossilize?
V-ing form
can I not be fossilizing? can you not be fossilizing? can she not be fossilizing? can we not be fossilizing? can you not be fossilizing? can they not be fossilizing?
Perfect
can I not have fossilized? can you not have fossilized? can she not have fossilized? can we not have fossilized? can you not have fossilized? can they not have fossilized?
V-ing perfect
can I not have been fossilizing? can you not have been fossilizing? can she not have been fossilizing? can we not have been fossilizing? can you not have been fossilizing? can they not have been fossilizing?