can loop
Regular verb: loop - looped- looped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can loop
you can loop
she can loop
we can loop
you can loop
they can loop 	I can be looping
you can be looping
she can be looping
we can be looping
you can be looping
they can be looping	I can have looped
you can have looped
she can have looped
we can have looped
you can have looped
they can have looped	I can have been looping
you can have been looping
she can have been looping
we can have been looping
you can have been looping
they can have been looping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't loop
you can't loop
she can't loop
we can't loop
you can't loop
they can't loop 	I can't be looping
you can't be looping
she can't be looping
we can't be looping
you can't be looping
they can't be looping	I can't have looped
you can't have looped
she can't have looped
we can't have looped
you can't have looped
they can't have looped	I can't have been looping
you can't have been looping
she can't have been looping
we can't have been looping
you can't have been looping
they can't have been looping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I loop?
can you loop?
can she loop?
can we loop?
can you loop?
can they loop? 	can I be looping?
can you be looping?
can she be looping?
can we be looping?
can you be looping?
can they be looping? 	can I have looped?
can you have looped?
can she have looped?
can we have looped?
can you have looped?
can they have looped? 	can I have been looping?
can you have been looping?
can she have been looping?
can we have been looping?
can you have been looping?
can they have been looping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I loop?
can't you loop?
can't she loop?
can't we loop?
can't you loop?
can't they loop? 	can't I be looping?
can't you be looping?
can't she be looping?
can't we be looping?
can't you be looping?
can't they be looping? 	can't I have looped?
can't you have looped?
can't she have looped?
can't we have looped?
can't you have looped?
can't they have looped? 	can't I have been looping?
can't you have been looping?
can't she have been looping?
can't we have been looping?
can't you have been looping?
can't they have been looping?