I can deforest you can deforest he can deforest we can deforest you can deforest they can deforest
V-ing form
I can be deforesting you can be deforesting he can be deforesting we can be deforesting you can be deforesting they can be deforesting
Perfect
I can have deforested you can have deforested he can have deforested we can have deforested you can have deforested they can have deforested
V-ing perfect
I can have been deforesting you can have been deforesting he can have been deforesting we can have been deforesting you can have been deforesting they can have been deforesting
Negation
Simple form
I cannot deforest you cannot deforest he cannot deforest we cannot deforest you cannot deforest they cannot deforest
V-ing form
I cannot be deforesting you cannot be deforesting he cannot be deforesting we cannot be deforesting you cannot be deforesting they cannot be deforesting
Perfect
I cannot have deforested you cannot have deforested he cannot have deforested we cannot have deforested you cannot have deforested they cannot have deforested
V-ing perfect
I cannot have been deforesting you cannot have been deforesting he cannot have been deforesting we cannot have been deforesting you cannot have been deforesting they cannot have been deforesting
Interrogative form
Simple form
can I deforest? can you deforest? can he deforest? can we deforest? can you deforest? can they deforest?
V-ing form
can I be deforesting? can you be deforesting? can he be deforesting? can we be deforesting? can you be deforesting? can they be deforesting?
Perfect
can I have deforested? can you have deforested? can he have deforested? can we have deforested? can you have deforested? can they have deforested?
V-ing perfect
can I have been deforesting? can you have been deforesting? can he have been deforesting? can we have been deforesting? can you have been deforesting? can they have been deforesting?
Interro-negative form
Simple form
can I not deforest? can you not deforest? can he not deforest? can we not deforest? can you not deforest? can they not deforest?
V-ing form
can I not be deforesting? can you not be deforesting? can he not be deforesting? can we not be deforesting? can you not be deforesting? can they not be deforesting?
Perfect
can I not have deforested? can you not have deforested? can he not have deforested? can we not have deforested? can you not have deforested? can they not have deforested?
V-ing perfect
can I not have been deforesting? can you not have been deforesting? can he not have been deforesting? can we not have been deforesting? can you not have been deforesting? can they not have been deforesting?