English verb conjugation
MUST ESTABLISH

Regular verb: establish - established - established

Affirmation

Simple form	V-ing form
I must establish you must establish he must establish we must establish you must establish they must establish	I must be establishing you must be establishing he must be establishing we must be establishing you must be establishing they must be establishing
Perfect	V-ing perfect
I must have established you must have established he must have established we must have established you must have established they must have established	I must have been establishing you must have been establishing he must have been establishing we must have been establishing you must have been establishing they must have been establishing

Negation

Simple form	V-ing form
I must not establish you must not establish he must not establish we must not establish you must not establish they must not establish	I must not be establishing you must not be establishing he must not be establishing we must not be establishing you must not be establishing they must not be establishing
Perfect	V-ing perfect
I must not have established you must not have established he must not have established we must not have established you must not have established they must not have established	I must not have been establishing you must not have been establishing he must not have been establishing we must not have been establishing you must not have been establishing they must not have been establishing

Interrogative form

Simple form	V-ing form
must I establish? must you establish? must he establish? must we establish? must you establish? must they establish?	must I be establishing? must you be establishing? must he be establishing? must we be establishing? must you be establishing? must they be establishing?
Perfect	V-ing perfect
must I have established? must you have established? must he have established? must we have established? must you have established? must they have established?	must I have been establishing? must you have been establishing? must he have been establishing? must we have been establishing? must you have been establishing? must they have been establishing?

Interro-negative form

Simple form	V-ing form
must I not establish? must you not establish? must he not establish? must we not establish? must you not establish? must they not establish?	must I not be establishing? must you not be establishing? must he not be establishing? must we not be establishing? must you not be establishing? must they not be establishing?
Perfect	V-ing perfect
must I not have established? must you not have established? must he not have established? must we not have established? must you not have established? must they not have established?	must I not have been establishing? must you not have been establishing? must he not have been establishing? must we not have been establishing? must you not have been establishing? must they not have been establishing?