I can atrophy you can atrophy he can atrophy we can atrophy you can atrophy they can atrophy
V-ing form
I can be atrophying you can be atrophying he can be atrophying we can be atrophying you can be atrophying they can be atrophying
Perfect
I can have atrophied you can have atrophied he can have atrophied we can have atrophied you can have atrophied they can have atrophied
V-ing perfect
I can have been atrophying you can have been atrophying he can have been atrophying we can have been atrophying you can have been atrophying they can have been atrophying
Negation
Simple form
I cannot atrophy you cannot atrophy he cannot atrophy we cannot atrophy you cannot atrophy they cannot atrophy
V-ing form
I cannot be atrophying you cannot be atrophying he cannot be atrophying we cannot be atrophying you cannot be atrophying they cannot be atrophying
Perfect
I cannot have atrophied you cannot have atrophied he cannot have atrophied we cannot have atrophied you cannot have atrophied they cannot have atrophied
V-ing perfect
I cannot have been atrophying you cannot have been atrophying he cannot have been atrophying we cannot have been atrophying you cannot have been atrophying they cannot have been atrophying
Interrogative form
Simple form
can I atrophy? can you atrophy? can he atrophy? can we atrophy? can you atrophy? can they atrophy?
V-ing form
can I be atrophying? can you be atrophying? can he be atrophying? can we be atrophying? can you be atrophying? can they be atrophying?
Perfect
can I have atrophied? can you have atrophied? can he have atrophied? can we have atrophied? can you have atrophied? can they have atrophied?
V-ing perfect
can I have been atrophying? can you have been atrophying? can he have been atrophying? can we have been atrophying? can you have been atrophying? can they have been atrophying?
Interro-negative form
Simple form
can I not atrophy? can you not atrophy? can he not atrophy? can we not atrophy? can you not atrophy? can they not atrophy?
V-ing form
can I not be atrophying? can you not be atrophying? can he not be atrophying? can we not be atrophying? can you not be atrophying? can they not be atrophying?
Perfect
can I not have atrophied? can you not have atrophied? can he not have atrophied? can we not have atrophied? can you not have atrophied? can they not have atrophied?
V-ing perfect
can I not have been atrophying? can you not have been atrophying? can he not have been atrophying? can we not have been atrophying? can you not have been atrophying? can they not have been atrophying?