I must diagnose you must diagnose he must diagnose we must diagnose you must diagnose they must diagnose
V-ing form
I must be diagnosing you must be diagnosing he must be diagnosing we must be diagnosing you must be diagnosing they must be diagnosing
Perfect
I must have diagnosed you must have diagnosed he must have diagnosed we must have diagnosed you must have diagnosed they must have diagnosed
V-ing perfect
I must have been diagnosing you must have been diagnosing he must have been diagnosing we must have been diagnosing you must have been diagnosing they must have been diagnosing
Negation
Simple form
I must not diagnose you must not diagnose he must not diagnose we must not diagnose you must not diagnose they must not diagnose
V-ing form
I must not be diagnosing you must not be diagnosing he must not be diagnosing we must not be diagnosing you must not be diagnosing they must not be diagnosing
Perfect
I must not have diagnosed you must not have diagnosed he must not have diagnosed we must not have diagnosed you must not have diagnosed they must not have diagnosed
V-ing perfect
I must not have been diagnosing you must not have been diagnosing he must not have been diagnosing we must not have been diagnosing you must not have been diagnosing they must not have been diagnosing
Interrogative form
Simple form
must I diagnose? must you diagnose? must he diagnose? must we diagnose? must you diagnose? must they diagnose?
V-ing form
must I be diagnosing? must you be diagnosing? must he be diagnosing? must we be diagnosing? must you be diagnosing? must they be diagnosing?
Perfect
must I have diagnosed? must you have diagnosed? must he have diagnosed? must we have diagnosed? must you have diagnosed? must they have diagnosed?
V-ing perfect
must I have been diagnosing? must you have been diagnosing? must he have been diagnosing? must we have been diagnosing? must you have been diagnosing? must they have been diagnosing?
Interro-negative form
Simple form
must I not diagnose? must you not diagnose? must he not diagnose? must we not diagnose? must you not diagnose? must they not diagnose?
V-ing form
must I not be diagnosing? must you not be diagnosing? must he not be diagnosing? must we not be diagnosing? must you not be diagnosing? must they not be diagnosing?
Perfect
must I not have diagnosed? must you not have diagnosed? must he not have diagnosed? must we not have diagnosed? must you not have diagnosed? must they not have diagnosed?
V-ing perfect
must I not have been diagnosing? must you not have been diagnosing? must he not have been diagnosing? must we not have been diagnosing? must you not have been diagnosing? must they not have been diagnosing?