English verb conjugation
MUST CROSS-REACT

Regular verb: cross-react - cross-reacted - cross-reacted

Affirmation

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

Negation

Simple form	V-ing form
I mustn't cross-react you mustn't cross-react he mustn't cross-react we mustn't cross-react you mustn't cross-react they mustn't cross-react	I mustn't be cross-reacting you mustn't be cross-reacting he mustn't be cross-reacting we mustn't be cross-reacting you mustn't be cross-reacting they mustn't be cross-reacting
Perfect	V-ing perfect
I mustn't have cross-reacted you mustn't have cross-reacted he mustn't have cross-reacted we mustn't have cross-reacted you mustn't have cross-reacted they mustn't have cross-reacted	I mustn't have been cross-reacting you mustn't have been cross-reacting he mustn't have been cross-reacting we mustn't have been cross-reacting you mustn't have been cross-reacting they mustn't have been cross-reacting

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I cross-react? mustn't you cross-react? mustn't he cross-react? mustn't we cross-react? mustn't you cross-react? mustn't they cross-react?	mustn't I be cross-reacting? mustn't you be cross-reacting? mustn't he be cross-reacting? mustn't we be cross-reacting? mustn't you be cross-reacting? mustn't they be cross-reacting?
Perfect	V-ing perfect
mustn't I have cross-reacted? mustn't you have cross-reacted? mustn't he have cross-reacted? mustn't we have cross-reacted? mustn't you have cross-reacted? mustn't they have cross-reacted?	mustn't I have been cross-reacting? mustn't you have been cross-reacting? mustn't he have been cross-reacting? mustn't we have been cross-reacting? mustn't you have been cross-reacting? mustn't they have been cross-reacting?