English verb conjugation
MUST UNDERCHARGE

Regular verb: undercharge - undercharged - undercharged

Affirmation

Simple form	V-ing form
I must undercharge you must undercharge he must undercharge we must undercharge you must undercharge they must undercharge	I must be undercharging you must be undercharging he must be undercharging we must be undercharging you must be undercharging they must be undercharging
Perfect	V-ing perfect
I must have undercharged you must have undercharged he must have undercharged we must have undercharged you must have undercharged they must have undercharged	I must have been undercharging you must have been undercharging he must have been undercharging we must have been undercharging you must have been undercharging they must have been undercharging

Negation

Simple form	V-ing form
I must not undercharge you must not undercharge he must not undercharge we must not undercharge you must not undercharge they must not undercharge	I must not be undercharging you must not be undercharging he must not be undercharging we must not be undercharging you must not be undercharging they must not be undercharging
Perfect	V-ing perfect
I must not have undercharged you must not have undercharged he must not have undercharged we must not have undercharged you must not have undercharged they must not have undercharged	I must not have been undercharging you must not have been undercharging he must not have been undercharging we must not have been undercharging you must not have been undercharging they must not have been undercharging

Interrogative form

Simple form	V-ing form
must I undercharge? must you undercharge? must he undercharge? must we undercharge? must you undercharge? must they undercharge?	must I be undercharging? must you be undercharging? must he be undercharging? must we be undercharging? must you be undercharging? must they be undercharging?
Perfect	V-ing perfect
must I have undercharged? must you have undercharged? must he have undercharged? must we have undercharged? must you have undercharged? must they have undercharged?	must I have been undercharging? must you have been undercharging? must he have been undercharging? must we have been undercharging? must you have been undercharging? must they have been undercharging?

Interro-negative form

Simple form	V-ing form
must I not undercharge? must you not undercharge? must he not undercharge? must we not undercharge? must you not undercharge? must they not undercharge?	must I not be undercharging? must you not be undercharging? must he not be undercharging? must we not be undercharging? must you not be undercharging? must they not be undercharging?
Perfect	V-ing perfect
must I not have undercharged? must you not have undercharged? must he not have undercharged? must we not have undercharged? must you not have undercharged? must they not have undercharged?	must I not have been undercharging? must you not have been undercharging? must he not have been undercharging? must we not have been undercharging? must you not have been undercharging? must they not have been undercharging?