English verb conjugation
COULD PING-PONG

Regular verb: ping-pong - ping-ponged - ping-ponged

Affirmation

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

Negation

Simple form	V-ing form
I could not ping-pong you could not ping-pong she could not ping-pong we could not ping-pong you could not ping-pong they could not ping-pong	I could not be ping-ponging you could not be ping-ponging she could not be ping-ponging we could not be ping-ponging you could not be ping-ponging they could not be ping-ponging
Perfect	V-ing perfect
I could not have ping-ponged you could not have ping-ponged she could not have ping-ponged we could not have ping-ponged you could not have ping-ponged they could not have ping-ponged	I could not have been ping-ponging you could not have been ping-ponging she could not have been ping-ponging we could not have been ping-ponging you could not have been ping-ponging they could not have been ping-ponging

Interrogative form

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

Interro-negative form

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