English verb conjugation
MUST COFFER

Regular verb: coffer - coffered - coffered

Affirmation

Simple form	V-ing form
I must coffer you must coffer he must coffer we must coffer you must coffer they must coffer	I must be coffering you must be coffering he must be coffering we must be coffering you must be coffering they must be coffering
Perfect	V-ing perfect
I must have coffered you must have coffered he must have coffered we must have coffered you must have coffered they must have coffered	I must have been coffering you must have been coffering he must have been coffering we must have been coffering you must have been coffering they must have been coffering

Negation

Simple form	V-ing form
I mustn't coffer you mustn't coffer he mustn't coffer we mustn't coffer you mustn't coffer they mustn't coffer	I mustn't be coffering you mustn't be coffering he mustn't be coffering we mustn't be coffering you mustn't be coffering they mustn't be coffering
Perfect	V-ing perfect
I mustn't have coffered you mustn't have coffered he mustn't have coffered we mustn't have coffered you mustn't have coffered they mustn't have coffered	I mustn't have been coffering you mustn't have been coffering he mustn't have been coffering we mustn't have been coffering you mustn't have been coffering they mustn't have been coffering

Interrogative form

Simple form	V-ing form
must I coffer? must you coffer? must he coffer? must we coffer? must you coffer? must they coffer?	must I be coffering? must you be coffering? must he be coffering? must we be coffering? must you be coffering? must they be coffering?
Perfect	V-ing perfect
must I have coffered? must you have coffered? must he have coffered? must we have coffered? must you have coffered? must they have coffered?	must I have been coffering? must you have been coffering? must he have been coffering? must we have been coffering? must you have been coffering? must they have been coffering?

Interro-negative form

Simple form	V-ing form
mustn't I coffer? mustn't you coffer? mustn't he coffer? mustn't we coffer? mustn't you coffer? mustn't they coffer?	mustn't I be coffering? mustn't you be coffering? mustn't he be coffering? mustn't we be coffering? mustn't you be coffering? mustn't they be coffering?
Perfect	V-ing perfect
mustn't I have coffered? mustn't you have coffered? mustn't he have coffered? mustn't we have coffered? mustn't you have coffered? mustn't they have coffered?	mustn't I have been coffering? mustn't you have been coffering? mustn't he have been coffering? mustn't we have been coffering? mustn't you have been coffering? mustn't they have been coffering?