English verb conjugation
MUST OVERESTIMATE

Regular verb: overestimate - overestimated - overestimated

Affirmation

Simple form	V-ing form
I must overestimate you must overestimate he must overestimate we must overestimate you must overestimate they must overestimate	I must be overestimating you must be overestimating he must be overestimating we must be overestimating you must be overestimating they must be overestimating
Perfect	V-ing perfect
I must have overestimated you must have overestimated he must have overestimated we must have overestimated you must have overestimated they must have overestimated	I must have been overestimating you must have been overestimating he must have been overestimating we must have been overestimating you must have been overestimating they must have been overestimating

Negation

Simple form	V-ing form
I must not overestimate you must not overestimate he must not overestimate we must not overestimate you must not overestimate they must not overestimate	I must not be overestimating you must not be overestimating he must not be overestimating we must not be overestimating you must not be overestimating they must not be overestimating
Perfect	V-ing perfect
I must not have overestimated you must not have overestimated he must not have overestimated we must not have overestimated you must not have overestimated they must not have overestimated	I must not have been overestimating you must not have been overestimating he must not have been overestimating we must not have been overestimating you must not have been overestimating they must not have been overestimating

Interrogative form

Simple form	V-ing form
must I overestimate? must you overestimate? must he overestimate? must we overestimate? must you overestimate? must they overestimate?	must I be overestimating? must you be overestimating? must he be overestimating? must we be overestimating? must you be overestimating? must they be overestimating?
Perfect	V-ing perfect
must I have overestimated? must you have overestimated? must he have overestimated? must we have overestimated? must you have overestimated? must they have overestimated?	must I have been overestimating? must you have been overestimating? must he have been overestimating? must we have been overestimating? must you have been overestimating? must they have been overestimating?

Interro-negative form

Simple form	V-ing form
must I not overestimate? must you not overestimate? must he not overestimate? must we not overestimate? must you not overestimate? must they not overestimate?	must I not be overestimating? must you not be overestimating? must he not be overestimating? must we not be overestimating? must you not be overestimating? must they not be overestimating?
Perfect	V-ing perfect
must I not have overestimated? must you not have overestimated? must he not have overestimated? must we not have overestimated? must you not have overestimated? must they not have overestimated?	must I not have been overestimating? must you not have been overestimating? must he not have been overestimating? must we not have been overestimating? must you not have been overestimating? must they not have been overestimating?