may diagnose
Regular verb: diagnose - diagnosed- diagnosed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may diagnose
you may diagnose
she may diagnose
we may diagnose
you may diagnose
they may diagnose 	I may be diagnosing
you may be diagnosing
she may be diagnosing
we may be diagnosing
you may be diagnosing
they may be diagnosing	I may have diagnosed
you may have diagnosed
she may have diagnosed
we may have diagnosed
you may have diagnosed
they may have diagnosed	I may have been diagnosing
you may have been diagnosing
she may have been diagnosing
we may have been diagnosing
you may have been diagnosing
they may have been diagnosing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't diagnose
you mayn't diagnose
she mayn't diagnose
we mayn't diagnose
you mayn't diagnose
they mayn't diagnose 	I mayn't be diagnosing
you mayn't be diagnosing
she mayn't be diagnosing
we mayn't be diagnosing
you mayn't be diagnosing
they mayn't be diagnosing	I mayn't have diagnosed
you mayn't have diagnosed
she mayn't have diagnosed
we mayn't have diagnosed
you mayn't have diagnosed
they mayn't have diagnosed	I mayn't have been diagnosing
you mayn't have been diagnosing
she mayn't have been diagnosing
we mayn't have been diagnosing
you mayn't have been diagnosing
they mayn't have been diagnosing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I diagnose?
may you diagnose?
may she diagnose?
may we diagnose?
may you diagnose?
may they diagnose? 	may I be diagnosing?
may you be diagnosing?
may she be diagnosing?
may we be diagnosing?
may you be diagnosing?
may they be diagnosing? 	may I have diagnosed?
may you have diagnosed?
may she have diagnosed?
may we have diagnosed?
may you have diagnosed?
may they have diagnosed? 	may I have been diagnosing?
may you have been diagnosing?
may she have been diagnosing?
may we have been diagnosing?
may you have been diagnosing?
may they have been diagnosing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I diagnose?
mayn't you diagnose?
mayn't she diagnose?
mayn't we diagnose?
mayn't you diagnose?
mayn't they diagnose? 	mayn't I be diagnosing?
mayn't you be diagnosing?
mayn't she be diagnosing?
mayn't we be diagnosing?
mayn't you be diagnosing?
mayn't they be diagnosing? 	mayn't I have diagnosed?
mayn't you have diagnosed?
mayn't she have diagnosed?
mayn't we have diagnosed?
mayn't you have diagnosed?
mayn't they have diagnosed? 	mayn't I have been diagnosing?
mayn't you have been diagnosing?
mayn't she have been diagnosing?
mayn't we have been diagnosing?
mayn't you have been diagnosing?
mayn't they have been diagnosing?