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