should distinguish
Regular verb: distinguish - distinguished- distinguished

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd distinguish
you'd distinguish
she'd distinguish
we'd distinguish
you'd distinguish
they'd distinguish 	I'd be distinguishing
you'd be distinguishing
she'd be distinguishing
we'd be distinguishing
you'd be distinguishing
they'd be distinguishing	I should've distinguished
you should've distinguished
she should've distinguished
we should've distinguished
you should've distinguished
they should've distinguished	I should've been distinguishing
you should've been distinguishing
she should've been distinguishing
we should've been distinguishing
you should've been distinguishing
they should've been distinguishing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't distinguish
you shouldn't distinguish
she shouldn't distinguish
we shouldn't distinguish
you shouldn't distinguish
they shouldn't distinguish 	I shouldn't be distinguishing
you shouldn't be distinguishing
she shouldn't be distinguishing
we shouldn't be distinguishing
you shouldn't be distinguishing
they shouldn't be distinguishing	I shouldn't have distinguished
you shouldn't have distinguished
she shouldn't have distinguished
we shouldn't have distinguished
you shouldn't have distinguished
they shouldn't have distinguished	I shouldn't have been distinguishing
you shouldn't have been distinguishing
she shouldn't have been distinguishing
we shouldn't have been distinguishing
you shouldn't have been distinguishing
they shouldn't have been distinguishing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I distinguish?
should you distinguish?
should she distinguish?
should we distinguish?
should you distinguish?
should they distinguish? 	should I be distinguishing?
should you be distinguishing?
should she be distinguishing?
should we be distinguishing?
should you be distinguishing?
should they be distinguishing? 	should I have distinguished?
should you have distinguished?
should she have distinguished?
should we have distinguished?
should you have distinguished?
should they have distinguished? 	should I have been distinguishing?
should you have been distinguishing?
should she have been distinguishing?
should we have been distinguishing?
should you have been distinguishing?
should they have been distinguishing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I distinguish?
shouldn't you distinguish?
shouldn't she distinguish?
shouldn't we distinguish?
shouldn't you distinguish?
shouldn't they distinguish? 	shouldn't I be distinguishing?
shouldn't you be distinguishing?
shouldn't she be distinguishing?
shouldn't we be distinguishing?
shouldn't you be distinguishing?
shouldn't they be distinguishing? 	shouldn't I have distinguished?
shouldn't you have distinguished?
shouldn't she have distinguished?
shouldn't we have distinguished?
shouldn't you have distinguished?
shouldn't they have distinguished? 	shouldn't I have been distinguishing?
shouldn't you have been distinguishing?
shouldn't she have been distinguishing?
shouldn't we have been distinguishing?
shouldn't you have been distinguishing?
shouldn't they have been distinguishing?