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 can't cause you can't cause he can't cause we can't cause you can't cause they can't cause	I can't be causing you can't be causing he can't be causing we can't be causing you can't be causing they can't be causing
Perfect	V-ing perfect
I can't have caused you can't have caused he can't have caused we can't have caused you can't have caused they can't have caused	I can't have been causing you can't have been causing he can't have been causing we can't have been causing you can't have been causing they can't 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't I cause? can't you cause? can't he cause? can't we cause? can't you cause? can't they cause?	can't I be causing? can't you be causing? can't he be causing? can't we be causing? can't you be causing? can't they be causing?
Perfect	V-ing perfect
can't I have caused? can't you have caused? can't he have caused? can't we have caused? can't you have caused? can't they have caused?	can't I have been causing? can't you have been causing? can't he have been causing? can't we have been causing? can't you have been causing? can't they have been causing?