English verb conjugation
MUST CORRESPOND

Regular verb: correspond - corresponded - corresponded

Affirmation

Simple form	V-ing form
I must correspond you must correspond she must correspond we must correspond you must correspond they must correspond	I must be corresponding you must be corresponding she must be corresponding we must be corresponding you must be corresponding they must be corresponding
Perfect	V-ing perfect
I must have corresponded you must have corresponded she must have corresponded we must have corresponded you must have corresponded they must have corresponded	I must have been corresponding you must have been corresponding she must have been corresponding we must have been corresponding you must have been corresponding they must have been corresponding

Negation

Simple form	V-ing form
I must not correspond you must not correspond she must not correspond we must not correspond you must not correspond they must not correspond	I must not be corresponding you must not be corresponding she must not be corresponding we must not be corresponding you must not be corresponding they must not be corresponding
Perfect	V-ing perfect
I must not have corresponded you must not have corresponded she must not have corresponded we must not have corresponded you must not have corresponded they must not have corresponded	I must not have been corresponding you must not have been corresponding she must not have been corresponding we must not have been corresponding you must not have been corresponding they must not have been corresponding

Interrogative form

Simple form	V-ing form
must I correspond? must you correspond? must she correspond? must we correspond? must you correspond? must they correspond?	must I be corresponding? must you be corresponding? must she be corresponding? must we be corresponding? must you be corresponding? must they be corresponding?
Perfect	V-ing perfect
must I have corresponded? must you have corresponded? must she have corresponded? must we have corresponded? must you have corresponded? must they have corresponded?	must I have been corresponding? must you have been corresponding? must she have been corresponding? must we have been corresponding? must you have been corresponding? must they have been corresponding?

Interro-negative form

Simple form	V-ing form
must I not correspond? must you not correspond? must she not correspond? must we not correspond? must you not correspond? must they not correspond?	must I not be corresponding? must you not be corresponding? must she not be corresponding? must we not be corresponding? must you not be corresponding? must they not be corresponding?
Perfect	V-ing perfect
must I not have corresponded? must you not have corresponded? must she not have corresponded? must we not have corresponded? must you not have corresponded? must they not have corresponded?	must I not have been corresponding? must you not have been corresponding? must she not have been corresponding? must we not have been corresponding? must you not have been corresponding? must they not have been corresponding?