English verb conjugation
MUST REINVESTIGATE

Regular verb: reinvestigate - reinvestigated - reinvestigated

Affirmation

Simple form	V-ing form
I must reinvestigate you must reinvestigate she must reinvestigate we must reinvestigate you must reinvestigate they must reinvestigate	I must be reinvestigating you must be reinvestigating she must be reinvestigating we must be reinvestigating you must be reinvestigating they must be reinvestigating
Perfect	V-ing perfect
I must have reinvestigated you must have reinvestigated she must have reinvestigated we must have reinvestigated you must have reinvestigated they must have reinvestigated	I must have been reinvestigating you must have been reinvestigating she must have been reinvestigating we must have been reinvestigating you must have been reinvestigating they must have been reinvestigating

Negation

Simple form	V-ing form
I mustn't reinvestigate you mustn't reinvestigate she mustn't reinvestigate we mustn't reinvestigate you mustn't reinvestigate they mustn't reinvestigate	I mustn't be reinvestigating you mustn't be reinvestigating she mustn't be reinvestigating we mustn't be reinvestigating you mustn't be reinvestigating they mustn't be reinvestigating
Perfect	V-ing perfect
I mustn't have reinvestigated you mustn't have reinvestigated she mustn't have reinvestigated we mustn't have reinvestigated you mustn't have reinvestigated they mustn't have reinvestigated	I mustn't have been reinvestigating you mustn't have been reinvestigating she mustn't have been reinvestigating we mustn't have been reinvestigating you mustn't have been reinvestigating they mustn't have been reinvestigating

Interrogative form

Simple form	V-ing form
must I reinvestigate? must you reinvestigate? must she reinvestigate? must we reinvestigate? must you reinvestigate? must they reinvestigate?	must I be reinvestigating? must you be reinvestigating? must she be reinvestigating? must we be reinvestigating? must you be reinvestigating? must they be reinvestigating?
Perfect	V-ing perfect
must I have reinvestigated? must you have reinvestigated? must she have reinvestigated? must we have reinvestigated? must you have reinvestigated? must they have reinvestigated?	must I have been reinvestigating? must you have been reinvestigating? must she have been reinvestigating? must we have been reinvestigating? must you have been reinvestigating? must they have been reinvestigating?

Interro-negative form

Simple form	V-ing form
mustn't I reinvestigate? mustn't you reinvestigate? mustn't she reinvestigate? mustn't we reinvestigate? mustn't you reinvestigate? mustn't they reinvestigate?	mustn't I be reinvestigating? mustn't you be reinvestigating? mustn't she be reinvestigating? mustn't we be reinvestigating? mustn't you be reinvestigating? mustn't they be reinvestigating?
Perfect	V-ing perfect
mustn't I have reinvestigated? mustn't you have reinvestigated? mustn't she have reinvestigated? mustn't we have reinvestigated? mustn't you have reinvestigated? mustn't they have reinvestigated?	mustn't I have been reinvestigating? mustn't you have been reinvestigating? mustn't she have been reinvestigating? mustn't we have been reinvestigating? mustn't you have been reinvestigating? mustn't they have been reinvestigating?