English verb conjugation
CAN PONG

Regular verb: pong - ponged - ponged

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?