I should drum you should drum he should drum we should drum you should drum they should drum
V-ing form
I should be drumming you should be drumming he should be drumming we should be drumming you should be drumming they should be drumming
Perfect
I should have drummed you should have drummed he should have drummed we should have drummed you should have drummed they should have drummed
V-ing perfect
I should have been drumming you should have been drumming he should have been drumming we should have been drumming you should have been drumming they should have been drumming
Negation
Simple form
I should not drum you should not drum he should not drum we should not drum you should not drum they should not drum
V-ing form
I should not be drumming you should not be drumming he should not be drumming we should not be drumming you should not be drumming they should not be drumming
Perfect
I should not have drummed you should not have drummed he should not have drummed we should not have drummed you should not have drummed they should not have drummed
V-ing perfect
I should not have been drumming you should not have been drumming he should not have been drumming we should not have been drumming you should not have been drumming they should not have been drumming
Interrogative form
Simple form
should I drum? should you drum? should he drum? should we drum? should you drum? should they drum?
V-ing form
should I be drumming? should you be drumming? should he be drumming? should we be drumming? should you be drumming? should they be drumming?
Perfect
should I have drummed? should you have drummed? should he have drummed? should we have drummed? should you have drummed? should they have drummed?
V-ing perfect
should I have been drumming? should you have been drumming? should he have been drumming? should we have been drumming? should you have been drumming? should they have been drumming?
Interro-negative form
Simple form
should I not drum? should you not drum? should he not drum? should we not drum? should you not drum? should they not drum?
V-ing form
should I not be drumming? should you not be drumming? should he not be drumming? should we not be drumming? should you not be drumming? should they not be drumming?
Perfect
should I not have drummed? should you not have drummed? should he not have drummed? should we not have drummed? should you not have drummed? should they not have drummed?
V-ing perfect
should I not have been drumming? should you not have been drumming? should he not have been drumming? should we not have been drumming? should you not have been drumming? should they not have been drumming?