English verb conjugation
MUST PING-PONG

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

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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