I should flush you should flush she should flush we should flush you should flush they should flush
V-ing form
I should be flushing you should be flushing she should be flushing we should be flushing you should be flushing they should be flushing
Perfect
I should have flushed you should have flushed she should have flushed we should have flushed you should have flushed they should have flushed
V-ing perfect
I should have been flushing you should have been flushing she should have been flushing we should have been flushing you should have been flushing they should have been flushing
Negation
Simple form
I should not flush you should not flush she should not flush we should not flush you should not flush they should not flush
V-ing form
I should not be flushing you should not be flushing she should not be flushing we should not be flushing you should not be flushing they should not be flushing
Perfect
I should not have flushed you should not have flushed she should not have flushed we should not have flushed you should not have flushed they should not have flushed
V-ing perfect
I should not have been flushing you should not have been flushing she should not have been flushing we should not have been flushing you should not have been flushing they should not have been flushing
Interrogative form
Simple form
should I flush? should you flush? should she flush? should we flush? should you flush? should they flush?
V-ing form
should I be flushing? should you be flushing? should she be flushing? should we be flushing? should you be flushing? should they be flushing?
Perfect
should I have flushed? should you have flushed? should she have flushed? should we have flushed? should you have flushed? should they have flushed?
V-ing perfect
should I have been flushing? should you have been flushing? should she have been flushing? should we have been flushing? should you have been flushing? should they have been flushing?
Interro-negative form
Simple form
should I not flush? should you not flush? should she not flush? should we not flush? should you not flush? should they not flush?
V-ing form
should I not be flushing? should you not be flushing? should she not be flushing? should we not be flushing? should you not be flushing? should they not be flushing?
Perfect
should I not have flushed? should you not have flushed? should she not have flushed? should we not have flushed? should you not have flushed? should they not have flushed?
V-ing perfect
should I not have been flushing? should you not have been flushing? should she not have been flushing? should we not have been flushing? should you not have been flushing? should they not have been flushing?