English verb conjugation
MUST QUENCH

Regular verb: quench - quenched - quenched

Affirmation

Simple form	V-ing form
I must quench you must quench she must quench we must quench you must quench they must quench	I must be quenching you must be quenching she must be quenching we must be quenching you must be quenching they must be quenching
Perfect	V-ing perfect
I must have quenched you must have quenched she must have quenched we must have quenched you must have quenched they must have quenched	I must have been quenching you must have been quenching she must have been quenching we must have been quenching you must have been quenching they must have been quenching

Negation

Simple form	V-ing form
I mustn't quench you mustn't quench she mustn't quench we mustn't quench you mustn't quench they mustn't quench	I mustn't be quenching you mustn't be quenching she mustn't be quenching we mustn't be quenching you mustn't be quenching they mustn't be quenching
Perfect	V-ing perfect
I mustn't have quenched you mustn't have quenched she mustn't have quenched we mustn't have quenched you mustn't have quenched they mustn't have quenched	I mustn't have been quenching you mustn't have been quenching she mustn't have been quenching we mustn't have been quenching you mustn't have been quenching they mustn't have been quenching

Interrogative form

Simple form	V-ing form
must I quench? must you quench? must she quench? must we quench? must you quench? must they quench?	must I be quenching? must you be quenching? must she be quenching? must we be quenching? must you be quenching? must they be quenching?
Perfect	V-ing perfect
must I have quenched? must you have quenched? must she have quenched? must we have quenched? must you have quenched? must they have quenched?	must I have been quenching? must you have been quenching? must she have been quenching? must we have been quenching? must you have been quenching? must they have been quenching?

Interro-negative form

Simple form	V-ing form
mustn't I quench? mustn't you quench? mustn't she quench? mustn't we quench? mustn't you quench? mustn't they quench?	mustn't I be quenching? mustn't you be quenching? mustn't she be quenching? mustn't we be quenching? mustn't you be quenching? mustn't they be quenching?
Perfect	V-ing perfect
mustn't I have quenched? mustn't you have quenched? mustn't she have quenched? mustn't we have quenched? mustn't you have quenched? mustn't they have quenched?	mustn't I have been quenching? mustn't you have been quenching? mustn't she have been quenching? mustn't we have been quenching? mustn't you have been quenching? mustn't they have been quenching?