can attend
Regular verb: attend - attended- attended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can attend
you can attend
he can attend
we can attend
you can attend
they can attend 	I can be attending
you can be attending
he can be attending
we can be attending
you can be attending
they can be attending	I can have attended
you can have attended
he can have attended
we can have attended
you can have attended
they can have attended	I can have been attending
you can have been attending
he can have been attending
we can have been attending
you can have been attending
they can have been attending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't attend
you can't attend
he can't attend
we can't attend
you can't attend
they can't attend 	I can't be attending
you can't be attending
he can't be attending
we can't be attending
you can't be attending
they can't be attending	I can't have attended
you can't have attended
he can't have attended
we can't have attended
you can't have attended
they can't have attended	I can't have been attending
you can't have been attending
he can't have been attending
we can't have been attending
you can't have been attending
they can't have been attending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I attend?
can you attend?
can he attend?
can we attend?
can you attend?
can they attend? 	can I be attending?
can you be attending?
can he be attending?
can we be attending?
can you be attending?
can they be attending? 	can I have attended?
can you have attended?
can he have attended?
can we have attended?
can you have attended?
can they have attended? 	can I have been attending?
can you have been attending?
can he have been attending?
can we have been attending?
can you have been attending?
can they have been attending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I attend?
can't you attend?
can't he attend?
can't we attend?
can't you attend?
can't they attend? 	can't I be attending?
can't you be attending?
can't he be attending?
can't we be attending?
can't you be attending?
can't they be attending? 	can't I have attended?
can't you have attended?
can't he have attended?
can't we have attended?
can't you have attended?
can't they have attended? 	can't I have been attending?
can't you have been attending?
can't he have been attending?
can't we have been attending?
can't you have been attending?
can't they have been attending?