English verb conjugation
MUST COPPER

Regular verb: copper - coppered - coppered

Affirmation

Simple form	V-ing form
I must copper you must copper he must copper we must copper you must copper they must copper	I must be coppering you must be coppering he must be coppering we must be coppering you must be coppering they must be coppering
Perfect	V-ing perfect
I must have coppered you must have coppered he must have coppered we must have coppered you must have coppered they must have coppered	I must have been coppering you must have been coppering he must have been coppering we must have been coppering you must have been coppering they must have been coppering

Negation

Simple form	V-ing form
I mustn't copper you mustn't copper he mustn't copper we mustn't copper you mustn't copper they mustn't copper	I mustn't be coppering you mustn't be coppering he mustn't be coppering we mustn't be coppering you mustn't be coppering they mustn't be coppering
Perfect	V-ing perfect
I mustn't have coppered you mustn't have coppered he mustn't have coppered we mustn't have coppered you mustn't have coppered they mustn't have coppered	I mustn't have been coppering you mustn't have been coppering he mustn't have been coppering we mustn't have been coppering you mustn't have been coppering they mustn't have been coppering

Interrogative form

Simple form	V-ing form
must I copper? must you copper? must he copper? must we copper? must you copper? must they copper?	must I be coppering? must you be coppering? must he be coppering? must we be coppering? must you be coppering? must they be coppering?
Perfect	V-ing perfect
must I have coppered? must you have coppered? must he have coppered? must we have coppered? must you have coppered? must they have coppered?	must I have been coppering? must you have been coppering? must he have been coppering? must we have been coppering? must you have been coppering? must they have been coppering?

Interro-negative form

Simple form	V-ing form
mustn't I copper? mustn't you copper? mustn't he copper? mustn't we copper? mustn't you copper? mustn't they copper?	mustn't I be coppering? mustn't you be coppering? mustn't he be coppering? mustn't we be coppering? mustn't you be coppering? mustn't they be coppering?
Perfect	V-ing perfect
mustn't I have coppered? mustn't you have coppered? mustn't he have coppered? mustn't we have coppered? mustn't you have coppered? mustn't they have coppered?	mustn't I have been coppering? mustn't you have been coppering? mustn't he have been coppering? mustn't we have been coppering? mustn't you have been coppering? mustn't they have been coppering?