English verb conjugation
MUST REACT

Regular verb: react - reacted - reacted

Affirmation

Simple form	V-ing form
I must react you must react he must react we must react you must react they must react	I must be reacting you must be reacting he must be reacting we must be reacting you must be reacting they must be reacting
Perfect	V-ing perfect
I must have reacted you must have reacted he must have reacted we must have reacted you must have reacted they must have reacted	I must have been reacting you must have been reacting he must have been reacting we must have been reacting you must have been reacting they must have been reacting

Negation

Simple form	V-ing form
I must not react you must not react he must not react we must not react you must not react they must not react	I must not be reacting you must not be reacting he must not be reacting we must not be reacting you must not be reacting they must not be reacting
Perfect	V-ing perfect
I must not have reacted you must not have reacted he must not have reacted we must not have reacted you must not have reacted they must not have reacted	I must not have been reacting you must not have been reacting he must not have been reacting we must not have been reacting you must not have been reacting they must not have been reacting

Interrogative form

Simple form	V-ing form
must I react? must you react? must he react? must we react? must you react? must they react?	must I be reacting? must you be reacting? must he be reacting? must we be reacting? must you be reacting? must they be reacting?
Perfect	V-ing perfect
must I have reacted? must you have reacted? must he have reacted? must we have reacted? must you have reacted? must they have reacted?	must I have been reacting? must you have been reacting? must he have been reacting? must we have been reacting? must you have been reacting? must they have been reacting?

Interro-negative form

Simple form	V-ing form
must I not react? must you not react? must he not react? must we not react? must you not react? must they not react?	must I not be reacting? must you not be reacting? must he not be reacting? must we not be reacting? must you not be reacting? must they not be reacting?
Perfect	V-ing perfect
must I not have reacted? must you not have reacted? must he not have reacted? must we not have reacted? must you not have reacted? must they not have reacted?	must I not have been reacting? must you not have been reacting? must he not have been reacting? must we not have been reacting? must you not have been reacting? must they not have been reacting?