can run
Irregular verb: run - ran- run

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can run
you can run
he can run
we can run
you can run
they can run 	I can be running
you can be running
he can be running
we can be running
you can be running
they can be running	I can have run
you can have run
he can have run
we can have run
you can have run
they can have run	I can have been running
you can have been running
he can have been running
we can have been running
you can have been running
they can have been running	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot run
you cannot run
he cannot run
we cannot run
you cannot run
they cannot run 	I cannot be running
you cannot be running
he cannot be running
we cannot be running
you cannot be running
they cannot be running	I cannot have run
you cannot have run
he cannot have run
we cannot have run
you cannot have run
they cannot have run	I cannot have been running
you cannot have been running
he cannot have been running
we cannot have been running
you cannot have been running
they cannot have been running	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I run?
can you run?
can he run?
can we run?
can you run?
can they run? 	can I be running?
can you be running?
can he be running?
can we be running?
can you be running?
can they be running? 	can I have run?
can you have run?
can he have run?
can we have run?
can you have run?
can they have run? 	can I have been running?
can you have been running?
can he have been running?
can we have been running?
can you have been running?
can they have been running? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not run?
can you not run?
can he not run?
can we not run?
can you not run?
can they not run? 	can I not be running?
can you not be running?
can he not be running?
can we not be running?
can you not be running?
can they not be running? 	can I not have run?
can you not have run?
can he not have run?
can we not have run?
can you not have run?
can they not have run? 	can I not have been running?
can you not have been running?
can he not have been running?
can we not have been running?
can you not have been running?
can they not have been running?