English verb conjugation
SHOULD CRUMPLE

Regular verb: crumple - crumpled - crumpled

Affirmation

Simple form	V-ing form
I should crumple you should crumple he should crumple we should crumple you should crumple they should crumple	I should be crumpling you should be crumpling he should be crumpling we should be crumpling you should be crumpling they should be crumpling
Perfect	V-ing perfect
I should have crumpled you should have crumpled he should have crumpled we should have crumpled you should have crumpled they should have crumpled	I should have been crumpling you should have been crumpling he should have been crumpling we should have been crumpling you should have been crumpling they should have been crumpling

Negation

Simple form	V-ing form
I should not crumple you should not crumple he should not crumple we should not crumple you should not crumple they should not crumple	I should not be crumpling you should not be crumpling he should not be crumpling we should not be crumpling you should not be crumpling they should not be crumpling
Perfect	V-ing perfect
I should not have crumpled you should not have crumpled he should not have crumpled we should not have crumpled you should not have crumpled they should not have crumpled	I should not have been crumpling you should not have been crumpling he 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	V-ing form
should I crumple? should you crumple? should he crumple? should we crumple? should you crumple? should they crumple?	should I be crumpling? should you be crumpling? should he be crumpling? should we be crumpling? should you be crumpling? should they be crumpling?
Perfect	V-ing perfect
should I have crumpled? should you have crumpled? should he have crumpled? should we have crumpled? should you have crumpled? should they have crumpled?	should I have been crumpling? should you have been crumpling? should he have been crumpling? should we have been crumpling? should you have been crumpling? should they have been crumpling?

Interro-negative form

Simple form	V-ing form
should I not crumple? should you not crumple? should he not crumple? should we not crumple? should you not crumple? should they not crumple?	should I not be crumpling? should you not be crumpling? should he not be crumpling? should we not be crumpling? should you not be crumpling? should they not be crumpling?
Perfect	V-ing perfect
should I not have crumpled? should you not have crumpled? should he not have crumpled? should we not have crumpled? should you not have crumpled? should they not have crumpled?	should I not have been crumpling? should you not have been crumpling? should he not have been crumpling? should we not have been crumpling? should you not have been crumpling? should they not have been crumpling?