English verb conjugation
MUST COMPRESS

Regular verb: compress - compressed - compressed

Affirmation

Simple form	V-ing form
I must compress you must compress she must compress we must compress you must compress they must compress	I must be compressing you must be compressing she must be compressing we must be compressing you must be compressing they must be compressing
Perfect	V-ing perfect
I must have compressed you must have compressed she must have compressed we must have compressed you must have compressed they must have compressed	I must have been compressing you must have been compressing she must have been compressing we must have been compressing you must have been compressing they must have been compressing

Negation

Simple form	V-ing form
I must not compress you must not compress she must not compress we must not compress you must not compress they must not compress	I must not be compressing you must not be compressing she must not be compressing we must not be compressing you must not be compressing they must not be compressing
Perfect	V-ing perfect
I must not have compressed you must not have compressed she must not have compressed we must not have compressed you must not have compressed they must not have compressed	I must not have been compressing you must not have been compressing she must not have been compressing we must not have been compressing you must not have been compressing they must not have been compressing

Interrogative form

Simple form	V-ing form
must I compress? must you compress? must she compress? must we compress? must you compress? must they compress?	must I be compressing? must you be compressing? must she be compressing? must we be compressing? must you be compressing? must they be compressing?
Perfect	V-ing perfect
must I have compressed? must you have compressed? must she have compressed? must we have compressed? must you have compressed? must they have compressed?	must I have been compressing? must you have been compressing? must she have been compressing? must we have been compressing? must you have been compressing? must they have been compressing?

Interro-negative form

Simple form	V-ing form
must I not compress? must you not compress? must she not compress? must we not compress? must you not compress? must they not compress?	must I not be compressing? must you not be compressing? must she not be compressing? must we not be compressing? must you not be compressing? must they not be compressing?
Perfect	V-ing perfect
must I not have compressed? must you not have compressed? must she not have compressed? must we not have compressed? must you not have compressed? must they not have compressed?	must I not have been compressing? must you not have been compressing? must she not have been compressing? must we not have been compressing? must you not have been compressing? must they not have been compressing?