English verb conjugation
MUST COFFER

Regular verb: coffer - coffered - coffered

Affirmation

Simple form	V-ing form
I must coffer you must coffer she must coffer we must coffer you must coffer they must coffer	I must be coffering you must be coffering she 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 she 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 she 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 must not coffer you must not coffer she must not coffer we must not coffer you must not coffer they must not coffer	I must not be coffering you must not be coffering she must not be coffering we must not be coffering you must not be coffering they must not be coffering
Perfect	V-ing perfect
I must not have coffered you must not have coffered she must not have coffered we must not have coffered you must not have coffered they must not have coffered	I must not have been coffering you must not have been coffering she must not have been coffering we must not have been coffering you must not have been coffering they must not have been coffering

Interrogative form

Simple form	V-ing form
must I coffer? must you coffer? must she coffer? must we coffer? must you coffer? must they coffer?	must I be coffering? must you be coffering? must she 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 she 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 she 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
must I not coffer? must you not coffer? must she not coffer? must we not coffer? must you not coffer? must they not coffer?	must I not be coffering? must you not be coffering? must she not be coffering? must we not be coffering? must you not be coffering? must they not be coffering?
Perfect	V-ing perfect
must I not have coffered? must you not have coffered? must she not have coffered? must we not have coffered? must you not have coffered? must they not have coffered?	must I not have been coffering? must you not have been coffering? must she not have been coffering? must we not have been coffering? must you not have been coffering? must they not have been coffering?