English verb conjugation
MUST CHAFE

Regular verb: chafe - chafed - chafed

Affirmation

Simple form	V-ing form
I must chafe you must chafe he must chafe we must chafe you must chafe they must chafe	I must be chafing you must be chafing he must be chafing we must be chafing you must be chafing they must be chafing
Perfect	V-ing perfect
I must have chafed you must have chafed he must have chafed we must have chafed you must have chafed they must have chafed	I must have been chafing you must have been chafing he must have been chafing we must have been chafing you must have been chafing they must have been chafing

Negation

Simple form	V-ing form
I mustn't chafe you mustn't chafe he mustn't chafe we mustn't chafe you mustn't chafe they mustn't chafe	I mustn't be chafing you mustn't be chafing he mustn't be chafing we mustn't be chafing you mustn't be chafing they mustn't be chafing
Perfect	V-ing perfect
I mustn't have chafed you mustn't have chafed he mustn't have chafed we mustn't have chafed you mustn't have chafed they mustn't have chafed	I mustn't have been chafing you mustn't have been chafing he mustn't have been chafing we mustn't have been chafing you mustn't have been chafing they mustn't have been chafing

Interrogative form

Simple form	V-ing form
must I chafe? must you chafe? must he chafe? must we chafe? must you chafe? must they chafe?	must I be chafing? must you be chafing? must he be chafing? must we be chafing? must you be chafing? must they be chafing?
Perfect	V-ing perfect
must I have chafed? must you have chafed? must he have chafed? must we have chafed? must you have chafed? must they have chafed?	must I have been chafing? must you have been chafing? must he have been chafing? must we have been chafing? must you have been chafing? must they have been chafing?

Interro-negative form

Simple form	V-ing form
mustn't I chafe? mustn't you chafe? mustn't he chafe? mustn't we chafe? mustn't you chafe? mustn't they chafe?	mustn't I be chafing? mustn't you be chafing? mustn't he be chafing? mustn't we be chafing? mustn't you be chafing? mustn't they be chafing?
Perfect	V-ing perfect
mustn't I have chafed? mustn't you have chafed? mustn't he have chafed? mustn't we have chafed? mustn't you have chafed? mustn't they have chafed?	mustn't I have been chafing? mustn't you have been chafing? mustn't he have been chafing? mustn't we have been chafing? mustn't you have been chafing? mustn't they have been chafing?