English verb conjugation
MUST CHAP

Regular verb: chap - chapped - chapped

Affirmation

Simple form	V-ing form
I must chap you must chap he must chap we must chap you must chap they must chap	I must be chapping you must be chapping he must be chapping we must be chapping you must be chapping they must be chapping
Perfect	V-ing perfect
I must have chapped you must have chapped he must have chapped we must have chapped you must have chapped they must have chapped	I must have been chapping you must have been chapping he must have been chapping we must have been chapping you must have been chapping they must have been chapping

Negation

Simple form	V-ing form
I must not chap you must not chap he must not chap we must not chap you must not chap they must not chap	I must not be chapping you must not be chapping he must not be chapping we must not be chapping you must not be chapping they must not be chapping
Perfect	V-ing perfect
I must not have chapped you must not have chapped he must not have chapped we must not have chapped you must not have chapped they must not have chapped	I must not have been chapping you must not have been chapping he must not have been chapping we must not have been chapping you must not have been chapping they must not have been chapping

Interrogative form

Simple form	V-ing form
must I chap? must you chap? must he chap? must we chap? must you chap? must they chap?	must I be chapping? must you be chapping? must he be chapping? must we be chapping? must you be chapping? must they be chapping?
Perfect	V-ing perfect
must I have chapped? must you have chapped? must he have chapped? must we have chapped? must you have chapped? must they have chapped?	must I have been chapping? must you have been chapping? must he have been chapping? must we have been chapping? must you have been chapping? must they have been chapping?

Interro-negative form

Simple form	V-ing form
must I not chap? must you not chap? must he not chap? must we not chap? must you not chap? must they not chap?	must I not be chapping? must you not be chapping? must he not be chapping? must we not be chapping? must you not be chapping? must they not be chapping?
Perfect	V-ing perfect
must I not have chapped? must you not have chapped? must he not have chapped? must we not have chapped? must you not have chapped? must they not have chapped?	must I not have been chapping? must you not have been chapping? must he not have been chapping? must we not have been chapping? must you not have been chapping? must they not have been chapping?