I can fossilize you can fossilize he can fossilize we can fossilize you can fossilize they can fossilize
V-ing form
I can be fossilizing you can be fossilizing he can be fossilizing we can be fossilizing you can be fossilizing they can be fossilizing
Perfect
I can have fossilized you can have fossilized he 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 he can have been fossilizing we can have been fossilizing you can have been fossilizing they can have been fossilizing
Negation
Simple form
I can't fossilize you can't fossilize he can't fossilize we can't fossilize you can't fossilize they can't fossilize
V-ing form
I can't be fossilizing you can't be fossilizing he can't be fossilizing we can't be fossilizing you can't be fossilizing they can't be fossilizing
Perfect
I can't have fossilized you can't have fossilized he can't have fossilized we can't have fossilized you can't have fossilized they can't have fossilized
V-ing perfect
I can't have been fossilizing you can't have been fossilizing he can't have been fossilizing we can't have been fossilizing you can't have been fossilizing they can't have been fossilizing
Interrogative form
Simple form
can I fossilize? can you fossilize? can he fossilize? can we fossilize? can you fossilize? can they fossilize?
V-ing form
can I be fossilizing? can you be fossilizing? can he be fossilizing? can we be fossilizing? can you be fossilizing? can they be fossilizing?
Perfect
can I have fossilized? can you have fossilized? can he 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 he have been fossilizing? can we have been fossilizing? can you have been fossilizing? can they have been fossilizing?
Interro-negative form
Simple form
can't I fossilize? can't you fossilize? can't he fossilize? can't we fossilize? can't you fossilize? can't they fossilize?
V-ing form
can't I be fossilizing? can't you be fossilizing? can't he be fossilizing? can't we be fossilizing? can't you be fossilizing? can't they be fossilizing?
Perfect
can't I have fossilized? can't you have fossilized? can't he have fossilized? can't we have fossilized? can't you have fossilized? can't they have fossilized?
V-ing perfect
can't I have been fossilizing? can't you have been fossilizing? can't he have been fossilizing? can't we have been fossilizing? can't you have been fossilizing? can't they have been fossilizing?