can stop
Regular verb: stop - stopped- stopped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can stop
you can stop
she can stop
we can stop
you can stop
they can stop 	I can be stopping
you can be stopping
she can be stopping
we can be stopping
you can be stopping
they can be stopping	I can have stopped
you can have stopped
she can have stopped
we can have stopped
you can have stopped
they can have stopped	I can have been stopping
you can have been stopping
she can have been stopping
we can have been stopping
you can have been stopping
they can have been stopping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't stop
you can't stop
she can't stop
we can't stop
you can't stop
they can't stop 	I can't be stopping
you can't be stopping
she can't be stopping
we can't be stopping
you can't be stopping
they can't be stopping	I can't have stopped
you can't have stopped
she can't have stopped
we can't have stopped
you can't have stopped
they can't have stopped	I can't have been stopping
you can't have been stopping
she can't have been stopping
we can't have been stopping
you can't have been stopping
they can't have been stopping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I stop?
can you stop?
can she stop?
can we stop?
can you stop?
can they stop? 	can I be stopping?
can you be stopping?
can she be stopping?
can we be stopping?
can you be stopping?
can they be stopping? 	can I have stopped?
can you have stopped?
can she have stopped?
can we have stopped?
can you have stopped?
can they have stopped? 	can I have been stopping?
can you have been stopping?
can she have been stopping?
can we have been stopping?
can you have been stopping?
can they have been stopping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I stop?
can't you stop?
can't she stop?
can't we stop?
can't you stop?
can't they stop? 	can't I be stopping?
can't you be stopping?
can't she be stopping?
can't we be stopping?
can't you be stopping?
can't they be stopping? 	can't I have stopped?
can't you have stopped?
can't she have stopped?
can't we have stopped?
can't you have stopped?
can't they have stopped? 	can't I have been stopping?
can't you have been stopping?
can't she have been stopping?
can't we have been stopping?
can't you have been stopping?
can't they have been stopping?