I can increase you can increase he can increase we can increase you can increase they can increase
V-ing form
I can be increasing you can be increasing he can be increasing we can be increasing you can be increasing they can be increasing
Perfect
I can have increased you can have increased he can have increased we can have increased you can have increased they can have increased
V-ing perfect
I can have been increasing you can have been increasing he can have been increasing we can have been increasing you can have been increasing they can have been increasing
Negation
Simple form
I cannot increase you cannot increase he cannot increase we cannot increase you cannot increase they cannot increase
V-ing form
I cannot be increasing you cannot be increasing he cannot be increasing we cannot be increasing you cannot be increasing they cannot be increasing
Perfect
I cannot have increased you cannot have increased he cannot have increased we cannot have increased you cannot have increased they cannot have increased
V-ing perfect
I cannot have been increasing you cannot have been increasing he cannot have been increasing we cannot have been increasing you cannot have been increasing they cannot have been increasing
Interrogative form
Simple form
can I increase? can you increase? can he increase? can we increase? can you increase? can they increase?
V-ing form
can I be increasing? can you be increasing? can he be increasing? can we be increasing? can you be increasing? can they be increasing?
Perfect
can I have increased? can you have increased? can he have increased? can we have increased? can you have increased? can they have increased?
V-ing perfect
can I have been increasing? can you have been increasing? can he have been increasing? can we have been increasing? can you have been increasing? can they have been increasing?
Interro-negative form
Simple form
can I not increase? can you not increase? can he not increase? can we not increase? can you not increase? can they not increase?
V-ing form
can I not be increasing? can you not be increasing? can he not be increasing? can we not be increasing? can you not be increasing? can they not be increasing?
Perfect
can I not have increased? can you not have increased? can he not have increased? can we not have increased? can you not have increased? can they not have increased?
V-ing perfect
can I not have been increasing? can you not have been increasing? can he not have been increasing? can we not have been increasing? can you not have been increasing? can they not have been increasing?