I should flat you should flat he should flat we should flat you should flat they should flat
V-ing form
I should be flating you should be flating he should be flating we should be flating you should be flating they should be flating
Perfect
I should have flated you should have flated he 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 he 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 he 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 he 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 he 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 he 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 he flat? should we flat? should you flat? should they flat?
V-ing form
should I be flating? should you be flating? should he be flating? should we be flating? should you be flating? should they be flating?
Perfect
should I have flated? should you have flated? should he 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 he 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 he 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 he 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 he 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 he not have been flating? should we not have been flating? should you not have been flating? should they not have been flating?