can prong
Regular verb: prong - pronged- pronged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can prong
you can prong
she can prong
we can prong
you can prong
they can prong 	I can be pronging
you can be pronging
she can be pronging
we can be pronging
you can be pronging
they can be pronging	I can have pronged
you can have pronged
she can have pronged
we can have pronged
you can have pronged
they can have pronged	I can have been pronging
you can have been pronging
she can have been pronging
we can have been pronging
you can have been pronging
they can have been pronging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot prong
you cannot prong
she cannot prong
we cannot prong
you cannot prong
they cannot prong 	I cannot be pronging
you cannot be pronging
she cannot be pronging
we cannot be pronging
you cannot be pronging
they cannot be pronging	I cannot have pronged
you cannot have pronged
she cannot have pronged
we cannot have pronged
you cannot have pronged
they cannot have pronged	I cannot have been pronging
you cannot have been pronging
she cannot have been pronging
we cannot have been pronging
you cannot have been pronging
they cannot have been pronging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I prong?
can you prong?
can she prong?
can we prong?
can you prong?
can they prong? 	can I be pronging?
can you be pronging?
can she be pronging?
can we be pronging?
can you be pronging?
can they be pronging? 	can I have pronged?
can you have pronged?
can she have pronged?
can we have pronged?
can you have pronged?
can they have pronged? 	can I have been pronging?
can you have been pronging?
can she have been pronging?
can we have been pronging?
can you have been pronging?
can they have been pronging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not prong?
can you not prong?
can she not prong?
can we not prong?
can you not prong?
can they not prong? 	can I not be pronging?
can you not be pronging?
can she not be pronging?
can we not be pronging?
can you not be pronging?
can they not be pronging? 	can I not have pronged?
can you not have pronged?
can she not have pronged?
can we not have pronged?
can you not have pronged?
can they not have pronged? 	can I not have been pronging?
can you not have been pronging?
can she not have been pronging?
can we not have been pronging?
can you not have been pronging?
can they not have been pronging?