English verb conjugation
MUST CHAP

Regular verb: chap - chapped - chapped

Affirmation

Simple form	V-ing form
I must chap you must chap she must chap we must chap you must chap they must chap	I must be chapping you must be chapping she 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 she 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 she 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 mustn't chap you mustn't chap she mustn't chap we mustn't chap you mustn't chap they mustn't chap	I mustn't be chapping you mustn't be chapping she mustn't be chapping we mustn't be chapping you mustn't be chapping they mustn't be chapping
Perfect	V-ing perfect
I mustn't have chapped you mustn't have chapped she mustn't have chapped we mustn't have chapped you mustn't have chapped they mustn't have chapped	I mustn't have been chapping you mustn't have been chapping she mustn't have been chapping we mustn't have been chapping you mustn't have been chapping they mustn't have been chapping

Interrogative form

Simple form	V-ing form
must I chap? must you chap? must she chap? must we chap? must you chap? must they chap?	must I be chapping? must you be chapping? must she 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 she 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 she 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
mustn't I chap? mustn't you chap? mustn't she chap? mustn't we chap? mustn't you chap? mustn't they chap?	mustn't I be chapping? mustn't you be chapping? mustn't she be chapping? mustn't we be chapping? mustn't you be chapping? mustn't they be chapping?
Perfect	V-ing perfect
mustn't I have chapped? mustn't you have chapped? mustn't she have chapped? mustn't we have chapped? mustn't you have chapped? mustn't they have chapped?	mustn't I have been chapping? mustn't you have been chapping? mustn't she have been chapping? mustn't we have been chapping? mustn't you have been chapping? mustn't they have been chapping?