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