should diagnose
Regular verb: diagnose - diagnosed- diagnosed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd diagnose
you'd diagnose
she'd diagnose
we'd diagnose
you'd diagnose
they'd diagnose 	I'd be diagnosing
you'd be diagnosing
she'd be diagnosing
we'd be diagnosing
you'd be diagnosing
they'd be diagnosing	I should've diagnosed
you should've diagnosed
she should've diagnosed
we should've diagnosed
you should've diagnosed
they should've diagnosed	I should've been diagnosing
you should've been diagnosing
she should've been diagnosing
we should've been diagnosing
you should've been diagnosing
they should've been diagnosing	

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

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

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