I should crumple you should crumple she should crumple we should crumple you should crumple they should crumple
V-ing form
I should be crumpling you should be crumpling she should be crumpling we should be crumpling you should be crumpling they should be crumpling
Perfect
I should have crumpled you should have crumpled she should have crumpled we should have crumpled you should have crumpled they should have crumpled
V-ing perfect
I should have been crumpling you should have been crumpling she should have been crumpling we should have been crumpling you should have been crumpling they should have been crumpling
Negation
Simple form
I should not crumple you should not crumple she should not crumple we should not crumple you should not crumple they should not crumple
V-ing form
I should not be crumpling you should not be crumpling she should not be crumpling we should not be crumpling you should not be crumpling they should not be crumpling
Perfect
I should not have crumpled you should not have crumpled she should not have crumpled we should not have crumpled you should not have crumpled they should not have crumpled
V-ing perfect
I should not have been crumpling you should not have been crumpling she should not have been crumpling we should not have been crumpling you should not have been crumpling they should not have been crumpling
Interrogative form
Simple form
should I crumple? should you crumple? should she crumple? should we crumple? should you crumple? should they crumple?
V-ing form
should I be crumpling? should you be crumpling? should she be crumpling? should we be crumpling? should you be crumpling? should they be crumpling?
Perfect
should I have crumpled? should you have crumpled? should she have crumpled? should we have crumpled? should you have crumpled? should they have crumpled?
V-ing perfect
should I have been crumpling? should you have been crumpling? should she have been crumpling? should we have been crumpling? should you have been crumpling? should they have been crumpling?
Interro-negative form
Simple form
should I not crumple? should you not crumple? should she not crumple? should we not crumple? should you not crumple? should they not crumple?
V-ing form
should I not be crumpling? should you not be crumpling? should she not be crumpling? should we not be crumpling? should you not be crumpling? should they not be crumpling?
Perfect
should I not have crumpled? should you not have crumpled? should she not have crumpled? should we not have crumpled? should you not have crumpled? should they not have crumpled?
V-ing perfect
should I not have been crumpling? should you not have been crumpling? should she not have been crumpling? should we not have been crumpling? should you not have been crumpling? should they not have been crumpling?