I should flat you should flat she should flat we should flat you should flat they should flat
V-ing form
I should be flating you should be flating she should be flating we should be flating you should be flating they should be flating
Perfect
I should have flated you should have flated she should have flated we should have flated you should have flated they should have flated
V-ing perfect
I should have been flating you should have been flating she should have been flating we should have been flating you should have been flating they should have been flating
Negation
Simple form
I should not flat you should not flat she should not flat we should not flat you should not flat they should not flat
V-ing form
I should not be flating you should not be flating she should not be flating we should not be flating you should not be flating they should not be flating
Perfect
I should not have flated you should not have flated she should not have flated we should not have flated you should not have flated they should not have flated
V-ing perfect
I should not have been flating you should not have been flating she should not have been flating we should not have been flating you should not have been flating they should not have been flating
Interrogative form
Simple form
should I flat? should you flat? should she flat? should we flat? should you flat? should they flat?
V-ing form
should I be flating? should you be flating? should she be flating? should we be flating? should you be flating? should they be flating?
Perfect
should I have flated? should you have flated? should she have flated? should we have flated? should you have flated? should they have flated?
V-ing perfect
should I have been flating? should you have been flating? should she have been flating? should we have been flating? should you have been flating? should they have been flating?
Interro-negative form
Simple form
should I not flat? should you not flat? should she not flat? should we not flat? should you not flat? should they not flat?
V-ing form
should I not be flating? should you not be flating? should she not be flating? should we not be flating? should you not be flating? should they not be flating?
Perfect
should I not have flated? should you not have flated? should she not have flated? should we not have flated? should you not have flated? should they not have flated?
V-ing perfect
should I not have been flating? should you not have been flating? should she not have been flating? should we not have been flating? should you not have been flating? should they not have been flating?