English verb conjugation
MUST PARENTHESIZE

Regular verb: parenthesize - parenthesized - parenthesized

Affirmation

Simple form	V-ing form
I must parenthesize you must parenthesize she must parenthesize we must parenthesize you must parenthesize they must parenthesize	I must be parenthesizing you must be parenthesizing she must be parenthesizing we must be parenthesizing you must be parenthesizing they must be parenthesizing
Perfect	V-ing perfect
I must have parenthesized you must have parenthesized she must have parenthesized we must have parenthesized you must have parenthesized they must have parenthesized	I must have been parenthesizing you must have been parenthesizing she must have been parenthesizing we must have been parenthesizing you must have been parenthesizing they must have been parenthesizing

Negation

Simple form	V-ing form
I must not parenthesize you must not parenthesize she must not parenthesize we must not parenthesize you must not parenthesize they must not parenthesize	I must not be parenthesizing you must not be parenthesizing she must not be parenthesizing we must not be parenthesizing you must not be parenthesizing they must not be parenthesizing
Perfect	V-ing perfect
I must not have parenthesized you must not have parenthesized she must not have parenthesized we must not have parenthesized you must not have parenthesized they must not have parenthesized	I must not have been parenthesizing you must not have been parenthesizing she must not have been parenthesizing we must not have been parenthesizing you must not have been parenthesizing they must not have been parenthesizing

Interrogative form

Simple form	V-ing form
must I parenthesize? must you parenthesize? must she parenthesize? must we parenthesize? must you parenthesize? must they parenthesize?	must I be parenthesizing? must you be parenthesizing? must she be parenthesizing? must we be parenthesizing? must you be parenthesizing? must they be parenthesizing?
Perfect	V-ing perfect
must I have parenthesized? must you have parenthesized? must she have parenthesized? must we have parenthesized? must you have parenthesized? must they have parenthesized?	must I have been parenthesizing? must you have been parenthesizing? must she have been parenthesizing? must we have been parenthesizing? must you have been parenthesizing? must they have been parenthesizing?

Interro-negative form

Simple form	V-ing form
must I not parenthesize? must you not parenthesize? must she not parenthesize? must we not parenthesize? must you not parenthesize? must they not parenthesize?	must I not be parenthesizing? must you not be parenthesizing? must she not be parenthesizing? must we not be parenthesizing? must you not be parenthesizing? must they not be parenthesizing?
Perfect	V-ing perfect
must I not have parenthesized? must you not have parenthesized? must she not have parenthesized? must we not have parenthesized? must you not have parenthesized? must they not have parenthesized?	must I not have been parenthesizing? must you not have been parenthesizing? must she not have been parenthesizing? must we not have been parenthesizing? must you not have been parenthesizing? must they not have been parenthesizing?