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 must not copy you must not copy he must not copy we must not copy you must not copy they must not copy	I must not be copying you must not be copying he must not be copying we must not be copying you must not be copying they must not be copying
Perfect	V-ing perfect
I must not have copied you must not have copied he must not have copied we must not have copied you must not have copied they must not have copied	I must not have been copying you must not have been copying he must not have been copying we must not have been copying you must not have been copying they must not 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
must I not copy? must you not copy? must he not copy? must we not copy? must you not copy? must they not copy?	must I not be copying? must you not be copying? must he not be copying? must we not be copying? must you not be copying? must they not be copying?
Perfect	V-ing perfect
must I not have copied? must you not have copied? must he not have copied? must we not have copied? must you not have copied? must they not have copied?	must I not have been copying? must you not have been copying? must he not have been copying? must we not have been copying? must you not have been copying? must they not have been copying?