can do
Irregular verb: do - did- done

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can do
you can do
she can do
we can do
you can do
they can do 	I can be doing
you can be doing
she can be doing
we can be doing
you can be doing
they can be doing	I can have done
you can have done
she can have done
we can have done
you can have done
they can have done	I can have been doing
you can have been doing
she can have been doing
we can have been doing
you can have been doing
they can have been doing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't do
you can't do
she can't do
we can't do
you can't do
they can't do 	I can't be doing
you can't be doing
she can't be doing
we can't be doing
you can't be doing
they can't be doing	I can't have done
you can't have done
she can't have done
we can't have done
you can't have done
they can't have done	I can't have been doing
you can't have been doing
she can't have been doing
we can't have been doing
you can't have been doing
they can't have been doing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I do?
can you do?
can she do?
can we do?
can you do?
can they do? 	can I be doing?
can you be doing?
can she be doing?
can we be doing?
can you be doing?
can they be doing? 	can I have done?
can you have done?
can she have done?
can we have done?
can you have done?
can they have done? 	can I have been doing?
can you have been doing?
can she have been doing?
can we have been doing?
can you have been doing?
can they have been doing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I do?
can't you do?
can't she do?
can't we do?
can't you do?
can't they do? 	can't I be doing?
can't you be doing?
can't she be doing?
can't we be doing?
can't you be doing?
can't they be doing? 	can't I have done?
can't you have done?
can't she have done?
can't we have done?
can't you have done?
can't they have done? 	can't I have been doing?
can't you have been doing?
can't she have been doing?
can't we have been doing?
can't you have been doing?
can't they have been doing?