I'd be growling you'd be growling she'd be growling we'd be growling you'd be growling they'd be growling
Perfect
I should've growled you should've growled she should've growled we should've growled you should've growled they should've growled
V-ing perfect
I should've been growling you should've been growling she should've been growling we should've been growling you should've been growling they should've been growling
Negation
Simple form
I shouldn't growl you shouldn't growl she shouldn't growl we shouldn't growl you shouldn't growl they shouldn't growl
V-ing form
I shouldn't be growling you shouldn't be growling she shouldn't be growling we shouldn't be growling you shouldn't be growling they shouldn't be growling
Perfect
I shouldn't have growled you shouldn't have growled she shouldn't have growled we shouldn't have growled you shouldn't have growled they shouldn't have growled
V-ing perfect
I shouldn't have been growling you shouldn't have been growling she shouldn't have been growling we shouldn't have been growling you shouldn't have been growling they shouldn't have been growling
Interrogative form
Simple form
should I growl? should you growl? should she growl? should we growl? should you growl? should they growl?
V-ing form
should I be growling? should you be growling? should she be growling? should we be growling? should you be growling? should they be growling?
Perfect
should I have growled? should you have growled? should she have growled? should we have growled? should you have growled? should they have growled?
V-ing perfect
should I have been growling? should you have been growling? should she have been growling? should we have been growling? should you have been growling? should they have been growling?
Interro-negative form
Simple form
shouldn't I growl? shouldn't you growl? shouldn't she growl? shouldn't we growl? shouldn't you growl? shouldn't they growl?
V-ing form
shouldn't I be growling? shouldn't you be growling? shouldn't she be growling? shouldn't we be growling? shouldn't you be growling? shouldn't they be growling?
Perfect
shouldn't I have growled? shouldn't you have growled? shouldn't she have growled? shouldn't we have growled? shouldn't you have growled? shouldn't they have growled?
V-ing perfect
shouldn't I have been growling? shouldn't you have been growling? shouldn't she have been growling? shouldn't we have been growling? shouldn't you have been growling? shouldn't they have been growling?