can pong
Regular verb: pong - ponged- ponged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pong
you can pong
she can pong
we can pong
you can pong
they can pong 	I can be ponging
you can be ponging
she can be ponging
we can be ponging
you can be ponging
they can be ponging	I can have ponged
you can have ponged
she can have ponged
we can have ponged
you can have ponged
they can have ponged	I can have been ponging
you can have been ponging
she can have been ponging
we can have been ponging
you can have been ponging
they can have been ponging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot pong
you cannot pong
she cannot pong
we cannot pong
you cannot pong
they cannot pong 	I cannot be ponging
you cannot be ponging
she cannot be ponging
we cannot be ponging
you cannot be ponging
they cannot be ponging	I cannot have ponged
you cannot have ponged
she cannot have ponged
we cannot have ponged
you cannot have ponged
they cannot have ponged	I cannot have been ponging
you cannot have been ponging
she cannot have been ponging
we cannot have been ponging
you cannot have been ponging
they cannot have been ponging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I pong?
can you pong?
can she pong?
can we pong?
can you pong?
can they pong? 	can I be ponging?
can you be ponging?
can she be ponging?
can we be ponging?
can you be ponging?
can they be ponging? 	can I have ponged?
can you have ponged?
can she have ponged?
can we have ponged?
can you have ponged?
can they have ponged? 	can I have been ponging?
can you have been ponging?
can she have been ponging?
can we have been ponging?
can you have been ponging?
can they have been ponging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not pong?
can you not pong?
can she not pong?
can we not pong?
can you not pong?
can they not pong? 	can I not be ponging?
can you not be ponging?
can she not be ponging?
can we not be ponging?
can you not be ponging?
can they not be ponging? 	can I not have ponged?
can you not have ponged?
can she not have ponged?
can we not have ponged?
can you not have ponged?
can they not have ponged? 	can I not have been ponging?
can you not have been ponging?
can she not have been ponging?
can we not have been ponging?
can you not have been ponging?
can they not have been ponging?