English verb conjugation
MUST INVOLVE

Regular verb: involve - involved - involved

Affirmation

Simple form	V-ing form
I must involve you must involve she must involve we must involve you must involve they must involve	I must be involving you must be involving she must be involving we must be involving you must be involving they must be involving
Perfect	V-ing perfect
I must have involved you must have involved she must have involved we must have involved you must have involved they must have involved	I must have been involving you must have been involving she must have been involving we must have been involving you must have been involving they must have been involving

Negation

Simple form	V-ing form
I must not involve you must not involve she must not involve we must not involve you must not involve they must not involve	I must not be involving you must not be involving she must not be involving we must not be involving you must not be involving they must not be involving
Perfect	V-ing perfect
I must not have involved you must not have involved she must not have involved we must not have involved you must not have involved they must not have involved	I must not have been involving you must not have been involving she must not have been involving we must not have been involving you must not have been involving they must not have been involving

Interrogative form

Simple form	V-ing form
must I involve? must you involve? must she involve? must we involve? must you involve? must they involve?	must I be involving? must you be involving? must she be involving? must we be involving? must you be involving? must they be involving?
Perfect	V-ing perfect
must I have involved? must you have involved? must she have involved? must we have involved? must you have involved? must they have involved?	must I have been involving? must you have been involving? must she have been involving? must we have been involving? must you have been involving? must they have been involving?

Interro-negative form

Simple form	V-ing form
must I not involve? must you not involve? must she not involve? must we not involve? must you not involve? must they not involve?	must I not be involving? must you not be involving? must she not be involving? must we not be involving? must you not be involving? must they not be involving?
Perfect	V-ing perfect
must I not have involved? must you not have involved? must she not have involved? must we not have involved? must you not have involved? must they not have involved?	must I not have been involving? must you not have been involving? must she not have been involving? must we not have been involving? must you not have been involving? must they not have been involving?