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