English verb conjugation
MUST CHAFE

Regular verb: chafe - chafed - chafed

Affirmation

Simple form	V-ing form
I must chafe you must chafe she must chafe we must chafe you must chafe they must chafe	I must be chafing you must be chafing she 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 she 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 she 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 must not chafe you must not chafe she must not chafe we must not chafe you must not chafe they must not chafe	I must not be chafing you must not be chafing she must not be chafing we must not be chafing you must not be chafing they must not be chafing
Perfect	V-ing perfect
I must not have chafed you must not have chafed she must not have chafed we must not have chafed you must not have chafed they must not have chafed	I must not have been chafing you must not have been chafing she must not have been chafing we must not have been chafing you must not have been chafing they must not have been chafing

Interrogative form

Simple form	V-ing form
must I chafe? must you chafe? must she chafe? must we chafe? must you chafe? must they chafe?	must I be chafing? must you be chafing? must she 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 she 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 she 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
must I not chafe? must you not chafe? must she not chafe? must we not chafe? must you not chafe? must they not chafe?	must I not be chafing? must you not be chafing? must she not be chafing? must we not be chafing? must you not be chafing? must they not be chafing?
Perfect	V-ing perfect
must I not have chafed? must you not have chafed? must she not have chafed? must we not have chafed? must you not have chafed? must they not have chafed?	must I not have been chafing? must you not have been chafing? must she not have been chafing? must we not have been chafing? must you not have been chafing? must they not have been chafing?