English verb conjugation
MUST COIF

Regular verb: coif - coifed - coifed

Affirmation

Simple form	V-ing form
I must coif you must coif he must coif we must coif you must coif they must coif	I must be coifing you must be coifing he must be coifing we must be coifing you must be coifing they must be coifing
Perfect	V-ing perfect
I must have coifed you must have coifed he must have coifed we must have coifed you must have coifed they must have coifed	I must have been coifing you must have been coifing he must have been coifing we must have been coifing you must have been coifing they must have been coifing

Negation

Simple form	V-ing form
I must not coif you must not coif he must not coif we must not coif you must not coif they must not coif	I must not be coifing you must not be coifing he must not be coifing we must not be coifing you must not be coifing they must not be coifing
Perfect	V-ing perfect
I must not have coifed you must not have coifed he must not have coifed we must not have coifed you must not have coifed they must not have coifed	I must not have been coifing you must not have been coifing he must not have been coifing we must not have been coifing you must not have been coifing they must not have been coifing

Interrogative form

Simple form	V-ing form
must I coif? must you coif? must he coif? must we coif? must you coif? must they coif?	must I be coifing? must you be coifing? must he be coifing? must we be coifing? must you be coifing? must they be coifing?
Perfect	V-ing perfect
must I have coifed? must you have coifed? must he have coifed? must we have coifed? must you have coifed? must they have coifed?	must I have been coifing? must you have been coifing? must he have been coifing? must we have been coifing? must you have been coifing? must they have been coifing?

Interro-negative form

Simple form	V-ing form
must I not coif? must you not coif? must he not coif? must we not coif? must you not coif? must they not coif?	must I not be coifing? must you not be coifing? must he not be coifing? must we not be coifing? must you not be coifing? must they not be coifing?
Perfect	V-ing perfect
must I not have coifed? must you not have coifed? must he not have coifed? must we not have coifed? must you not have coifed? must they not have coifed?	must I not have been coifing? must you not have been coifing? must he not have been coifing? must we not have been coifing? must you not have been coifing? must they not have been coifing?