English verb conjugation
MUST COPY

Regular verb: copy - copied - copied

Affirmation

Simple form	V-ing form
I must copy you must copy he must copy we must copy you must copy they must copy	I must be copying you must be copying he must be copying we must be copying you must be copying they must be copying
Perfect	V-ing perfect
I must have copied you must have copied he must have copied we must have copied you must have copied they must have copied	I must have been copying you must have been copying he must have been copying we must have been copying you must have been copying they must have been copying

Negation

Simple form	V-ing form
I mustn't copy you mustn't copy he mustn't copy we mustn't copy you mustn't copy they mustn't copy	I mustn't be copying you mustn't be copying he mustn't be copying we mustn't be copying you mustn't be copying they mustn't be copying
Perfect	V-ing perfect
I mustn't have copied you mustn't have copied he mustn't have copied we mustn't have copied you mustn't have copied they mustn't have copied	I mustn't have been copying you mustn't have been copying he mustn't have been copying we mustn't have been copying you mustn't have been copying they mustn't have been copying

Interrogative form

Simple form	V-ing form
must I copy? must you copy? must he copy? must we copy? must you copy? must they copy?	must I be copying? must you be copying? must he be copying? must we be copying? must you be copying? must they be copying?
Perfect	V-ing perfect
must I have copied? must you have copied? must he have copied? must we have copied? must you have copied? must they have copied?	must I have been copying? must you have been copying? must he have been copying? must we have been copying? must you have been copying? must they have been copying?

Interro-negative form

Simple form	V-ing form
mustn't I copy? mustn't you copy? mustn't he copy? mustn't we copy? mustn't you copy? mustn't they copy?	mustn't I be copying? mustn't you be copying? mustn't he be copying? mustn't we be copying? mustn't you be copying? mustn't they be copying?
Perfect	V-ing perfect
mustn't I have copied? mustn't you have copied? mustn't he have copied? mustn't we have copied? mustn't you have copied? mustn't they have copied?	mustn't I have been copying? mustn't you have been copying? mustn't he have been copying? mustn't we have been copying? mustn't you have been copying? mustn't they have been copying?