I should strum you should strum she should strum we should strum you should strum they should strum
V-ing form
I should be strumming you should be strumming she should be strumming we should be strumming you should be strumming they should be strumming
Perfect
I should have strummed you should have strummed she should have strummed we should have strummed you should have strummed they should have strummed
V-ing perfect
I should have been strumming you should have been strumming she should have been strumming we should have been strumming you should have been strumming they should have been strumming
Negation
Simple form
I should not strum you should not strum she should not strum we should not strum you should not strum they should not strum
V-ing form
I should not be strumming you should not be strumming she should not be strumming we should not be strumming you should not be strumming they should not be strumming
Perfect
I should not have strummed you should not have strummed she should not have strummed we should not have strummed you should not have strummed they should not have strummed
V-ing perfect
I should not have been strumming you should not have been strumming she should not have been strumming we should not have been strumming you should not have been strumming they should not 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
should I not strum? should you not strum? should she not strum? should we not strum? should you not strum? should they not strum?
V-ing form
should I not be strumming? should you not be strumming? should she not be strumming? should we not be strumming? should you not be strumming? should they not be strumming?
Perfect
should I not have strummed? should you not have strummed? should she not have strummed? should we not have strummed? should you not have strummed? should they not have strummed?
V-ing perfect
should I not have been strumming? should you not have been strumming? should she not have been strumming? should we not have been strumming? should you not have been strumming? should they not have been strumming?