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