can yo-yo
Regular verb: yo-yo - yo-yoed- yo-yoed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can yo-yo
you can yo-yo
she can yo-yo
we can yo-yo
you can yo-yo
they can yo-yo 	I can be yo-yoing
you can be yo-yoing
she can be yo-yoing
we can be yo-yoing
you can be yo-yoing
they can be yo-yoing	I can have yo-yoed
you can have yo-yoed
she can have yo-yoed
we can have yo-yoed
you can have yo-yoed
they can have yo-yoed	I can have been yo-yoing
you can have been yo-yoing
she can have been yo-yoing
we can have been yo-yoing
you can have been yo-yoing
they can have been yo-yoing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot yo-yo
you cannot yo-yo
she cannot yo-yo
we cannot yo-yo
you cannot yo-yo
they cannot yo-yo 	I cannot be yo-yoing
you cannot be yo-yoing
she cannot be yo-yoing
we cannot be yo-yoing
you cannot be yo-yoing
they cannot be yo-yoing	I cannot have yo-yoed
you cannot have yo-yoed
she cannot have yo-yoed
we cannot have yo-yoed
you cannot have yo-yoed
they cannot have yo-yoed	I cannot have been yo-yoing
you cannot have been yo-yoing
she cannot have been yo-yoing
we cannot have been yo-yoing
you cannot have been yo-yoing
they cannot have been yo-yoing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I yo-yo?
can you yo-yo?
can she yo-yo?
can we yo-yo?
can you yo-yo?
can they yo-yo? 	can I be yo-yoing?
can you be yo-yoing?
can she be yo-yoing?
can we be yo-yoing?
can you be yo-yoing?
can they be yo-yoing? 	can I have yo-yoed?
can you have yo-yoed?
can she have yo-yoed?
can we have yo-yoed?
can you have yo-yoed?
can they have yo-yoed? 	can I have been yo-yoing?
can you have been yo-yoing?
can she have been yo-yoing?
can we have been yo-yoing?
can you have been yo-yoing?
can they have been yo-yoing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not yo-yo?
can you not yo-yo?
can she not yo-yo?
can we not yo-yo?
can you not yo-yo?
can they not yo-yo? 	can I not be yo-yoing?
can you not be yo-yoing?
can she not be yo-yoing?
can we not be yo-yoing?
can you not be yo-yoing?
can they not be yo-yoing? 	can I not have yo-yoed?
can you not have yo-yoed?
can she not have yo-yoed?
can we not have yo-yoed?
can you not have yo-yoed?
can they not have yo-yoed? 	can I not have been yo-yoing?
can you not have been yo-yoing?
can she not have been yo-yoing?
can we not have been yo-yoing?
can you not have been yo-yoing?
can they not have been yo-yoing?