can cause
Regular verb: cause - caused- caused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can cause
you can cause
she can cause
we can cause
you can cause
they can cause 	I can be causing
you can be causing
she can be causing
we can be causing
you can be causing
they can be causing	I can have caused
you can have caused
she 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
she 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 	Perfect 	V-ing perfect 	
I can't cause
you can't cause
she 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
she can't be causing
we can't be causing
you can't be causing
they can't be causing	I can't have caused
you can't have caused
she 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
she 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 	Perfect 	V-ing perfect 	
can I cause?
can you cause?
can she cause?
can we cause?
can you cause?
can they cause? 	can I be causing?
can you be causing?
can she be causing?
can we be causing?
can you be causing?
can they be causing? 	can I have caused?
can you have caused?
can she 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 she 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 	Perfect 	V-ing perfect 	
can't I cause?
can't you cause?
can't she 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 she be causing?
can't we be causing?
can't you be causing?
can't they be causing? 	can't I have caused?
can't you have caused?
can't she 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 she have been causing?
can't we have been causing?
can't you have been causing?
can't they have been causing?