I can cause you can cause he can cause we can cause you can cause they can cause
V-ing form
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
I can have caused you can have caused he can have caused we can have caused you can have caused they can have caused
V-ing perfect
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
I can't cause you can't cause he can't cause we can't cause you can't cause they can't cause
V-ing form
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
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
V-ing perfect
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
can I cause? can you cause? can he cause? can we cause? can you cause? can they cause?
V-ing form
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
can I have caused? can you have caused? can he have caused? can we have caused? can you have caused? can they have caused?
V-ing perfect
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
can't I cause? can't you cause? can't he cause? can't we cause? can't you cause? can't they cause?
V-ing form
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
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?
V-ing perfect
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?