English verb conjugation
CAN CAUSE

Regular verb: cause - caused - caused

Affirmation

Simple form	V-ing form
I can cause you can cause he can cause we can cause you can cause they can cause	I can be causing you can be causing he can be causing we can be causing you can be causing they can be causing
Perfect	V-ing perfect
I can have caused you can have caused he can have caused we can have caused you can have caused they can have caused	I can have been causing you can have been causing he can have been causing we can have been causing you can have been causing they can have been causing

Negation

Simple form	V-ing form
I cannot cause you cannot cause he cannot cause we cannot cause you cannot cause they cannot cause	I cannot be causing you cannot be causing he cannot be causing we cannot be causing you cannot be causing they cannot be causing
Perfect	V-ing perfect
I cannot have caused you cannot have caused he cannot have caused we cannot have caused you cannot have caused they cannot have caused	I cannot have been causing you cannot have been causing he cannot have been causing we cannot have been causing you cannot have been causing they cannot have been causing

Interrogative form

Simple form	V-ing form
can I cause? can you cause? can he cause? can we cause? can you cause? can they cause?	can I be causing? can you be causing? can he be causing? can we be causing? can you be causing? can they be causing?
Perfect	V-ing perfect
can I have caused? can you have caused? can he have caused? can we have caused? can you have caused? can they have caused?	can I have been causing? can you have been causing? can he have been causing? can we have been causing? can you have been causing? can they have been causing?

Interro-negative form

Simple form	V-ing form
can I not cause? can you not cause? can he not cause? can we not cause? can you not cause? can they not cause?	can I not be causing? can you not be causing? can he not be causing? can we not be causing? can you not be causing? can they not be causing?
Perfect	V-ing perfect
can I not have caused? can you not have caused? can he not have caused? can we not have caused? can you not have caused? can they not have caused?	can I not have been causing? can you not have been causing? can he not have been causing? can we not have been causing? can you not have been causing? can they not have been causing?