I can calm you can calm he can calm we can calm you can calm they can calm
V-ing form
I can be calming you can be calming he can be calming we can be calming you can be calming they can be calming
Perfect
I can have calmed you can have calmed he can have calmed we can have calmed you can have calmed they can have calmed
V-ing perfect
I can have been calming you can have been calming he can have been calming we can have been calming you can have been calming they can have been calming
Negation
Simple form
I cannot calm you cannot calm he cannot calm we cannot calm you cannot calm they cannot calm
V-ing form
I cannot be calming you cannot be calming he cannot be calming we cannot be calming you cannot be calming they cannot be calming
Perfect
I cannot have calmed you cannot have calmed he cannot have calmed we cannot have calmed you cannot have calmed they cannot have calmed
V-ing perfect
I cannot have been calming you cannot have been calming he cannot have been calming we cannot have been calming you cannot have been calming they cannot have been calming
Interrogative form
Simple form
can I calm? can you calm? can he calm? can we calm? can you calm? can they calm?
V-ing form
can I be calming? can you be calming? can he be calming? can we be calming? can you be calming? can they be calming?
Perfect
can I have calmed? can you have calmed? can he have calmed? can we have calmed? can you have calmed? can they have calmed?
V-ing perfect
can I have been calming? can you have been calming? can he have been calming? can we have been calming? can you have been calming? can they have been calming?
Interro-negative form
Simple form
can I not calm? can you not calm? can he not calm? can we not calm? can you not calm? can they not calm?
V-ing form
can I not be calming? can you not be calming? can he not be calming? can we not be calming? can you not be calming? can they not be calming?
Perfect
can I not have calmed? can you not have calmed? can he not have calmed? can we not have calmed? can you not have calmed? can they not have calmed?
V-ing perfect
can I not have been calming? can you not have been calming? can he not have been calming? can we not have been calming? can you not have been calming? can they not have been calming?