Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I can crumple crumple you can crumple crumple he can crumple crumple we can crumple crumple you can crumple crumple they can crumple crumple
V-ing form
I can be crumple crumpling you can be crumple crumpling he can be crumple crumpling we can be crumple crumpling you can be crumple crumpling they can be crumple crumpling
Perfect
I can have crumple crumpled you can have crumple crumpled he can have crumple crumpled we can have crumple crumpled you can have crumple crumpled they can have crumple crumpled
V-ing perfect
I can have been crumple crumpling you can have been crumple crumpling he can have been crumple crumpling we can have been crumple crumpling you can have been crumple crumpling they can have been crumple crumpling
Negation
Simple form
I cannot crumple crumple you cannot crumple crumple he cannot crumple crumple we cannot crumple crumple you cannot crumple crumple they cannot crumple crumple
V-ing form
I cannot be crumple crumpling you cannot be crumple crumpling he cannot be crumple crumpling we cannot be crumple crumpling you cannot be crumple crumpling they cannot be crumple crumpling
Perfect
I cannot have crumple crumpled you cannot have crumple crumpled he cannot have crumple crumpled we cannot have crumple crumpled you cannot have crumple crumpled they cannot have crumple crumpled
V-ing perfect
I cannot have been crumple crumpling you cannot have been crumple crumpling he cannot have been crumple crumpling we cannot have been crumple crumpling you cannot have been crumple crumpling they cannot have been crumple crumpling
Interrogative form
Simple form
can I crumple crumple? can you crumple crumple? can he crumple crumple? can we crumple crumple? can you crumple crumple? can they crumple crumple?
V-ing form
can I be crumple crumpling? can you be crumple crumpling? can he be crumple crumpling? can we be crumple crumpling? can you be crumple crumpling? can they be crumple crumpling?
Perfect
can I have crumple crumpled? can you have crumple crumpled? can he have crumple crumpled? can we have crumple crumpled? can you have crumple crumpled? can they have crumple crumpled?
V-ing perfect
can I have been crumple crumpling? can you have been crumple crumpling? can he have been crumple crumpling? can we have been crumple crumpling? can you have been crumple crumpling? can they have been crumple crumpling?
Interro-negative form
Simple form
can I not crumple crumple? can you not crumple crumple? can he not crumple crumple? can we not crumple crumple? can you not crumple crumple? can they not crumple crumple?
V-ing form
can I not be crumple crumpling? can you not be crumple crumpling? can he not be crumple crumpling? can we not be crumple crumpling? can you not be crumple crumpling? can they not be crumple crumpling?
Perfect
can I not have crumple crumpled? can you not have crumple crumpled? can he not have crumple crumpled? can we not have crumple crumpled? can you not have crumple crumpled? can they not have crumple crumpled?
V-ing perfect
can I not have been crumple crumpling? can you not have been crumple crumpling? can he not have been crumple crumpling? can we not have been crumple crumpling? can you not have been crumple crumpling? can they not have been crumple crumpling?