English verb conjugation
MUST CHUG

Regular verb: chug - chugged - chugged

Affirmation

Simple form	V-ing form
I must chug you must chug he must chug we must chug you must chug they must chug	I must be chugging you must be chugging he must be chugging we must be chugging you must be chugging they must be chugging
Perfect	V-ing perfect
I must have chugged you must have chugged he must have chugged we must have chugged you must have chugged they must have chugged	I must have been chugging you must have been chugging he must have been chugging we must have been chugging you must have been chugging they must have been chugging

Negation

Simple form	V-ing form
I must not chug you must not chug he must not chug we must not chug you must not chug they must not chug	I must not be chugging you must not be chugging he must not be chugging we must not be chugging you must not be chugging they must not be chugging
Perfect	V-ing perfect
I must not have chugged you must not have chugged he must not have chugged we must not have chugged you must not have chugged they must not have chugged	I must not have been chugging you must not have been chugging he must not have been chugging we must not have been chugging you must not have been chugging they must not have been chugging

Interrogative form

Simple form	V-ing form
must I chug? must you chug? must he chug? must we chug? must you chug? must they chug?	must I be chugging? must you be chugging? must he be chugging? must we be chugging? must you be chugging? must they be chugging?
Perfect	V-ing perfect
must I have chugged? must you have chugged? must he have chugged? must we have chugged? must you have chugged? must they have chugged?	must I have been chugging? must you have been chugging? must he have been chugging? must we have been chugging? must you have been chugging? must they have been chugging?

Interro-negative form

Simple form	V-ing form
must I not chug? must you not chug? must he not chug? must we not chug? must you not chug? must they not chug?	must I not be chugging? must you not be chugging? must he not be chugging? must we not be chugging? must you not be chugging? must they not be chugging?
Perfect	V-ing perfect
must I not have chugged? must you not have chugged? must he not have chugged? must we not have chugged? must you not have chugged? must they not have chugged?	must I not have been chugging? must you not have been chugging? must he not have been chugging? must we not have been chugging? must you not have been chugging? must they not have been chugging?