English verb conjugation
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Regular verb: hesitate - hesitated - hesitated

Affirmation

Simple form	V-ing form
I must hesitate you must hesitate he must hesitate we must hesitate you must hesitate they must hesitate	I must be hesitating you must be hesitating he must be hesitating we must be hesitating you must be hesitating they must be hesitating
Perfect	V-ing perfect
I must have hesitated you must have hesitated he must have hesitated we must have hesitated you must have hesitated they must have hesitated	I must have been hesitating you must have been hesitating he must have been hesitating we must have been hesitating you must have been hesitating they must have been hesitating

Negation

Simple form	V-ing form
I must not hesitate you must not hesitate he must not hesitate we must not hesitate you must not hesitate they must not hesitate	I must not be hesitating you must not be hesitating he must not be hesitating we must not be hesitating you must not be hesitating they must not be hesitating
Perfect	V-ing perfect
I must not have hesitated you must not have hesitated he must not have hesitated we must not have hesitated you must not have hesitated they must not have hesitated	I must not have been hesitating you must not have been hesitating he must not have been hesitating we must not have been hesitating you must not have been hesitating they must not have been hesitating

Interrogative form

Simple form	V-ing form
must I hesitate? must you hesitate? must he hesitate? must we hesitate? must you hesitate? must they hesitate?	must I be hesitating? must you be hesitating? must he be hesitating? must we be hesitating? must you be hesitating? must they be hesitating?
Perfect	V-ing perfect
must I have hesitated? must you have hesitated? must he have hesitated? must we have hesitated? must you have hesitated? must they have hesitated?	must I have been hesitating? must you have been hesitating? must he have been hesitating? must we have been hesitating? must you have been hesitating? must they have been hesitating?

Interro-negative form

Simple form	V-ing form
must I not hesitate? must you not hesitate? must he not hesitate? must we not hesitate? must you not hesitate? must they not hesitate?	must I not be hesitating? must you not be hesitating? must he not be hesitating? must we not be hesitating? must you not be hesitating? must they not be hesitating?
Perfect	V-ing perfect
must I not have hesitated? must you not have hesitated? must he not have hesitated? must we not have hesitated? must you not have hesitated? must they not have hesitated?	must I not have been hesitating? must you not have been hesitating? must he not have been hesitating? must we not have been hesitating? must you not have been hesitating? must they not have been hesitating?