English verb conjugation
MUST INTERROGATE

Regular verb: interrogate - interrogated - interrogated

Affirmation

Simple form	V-ing form
I must interrogate you must interrogate he must interrogate we must interrogate you must interrogate they must interrogate	I must be interrogating you must be interrogating he must be interrogating we must be interrogating you must be interrogating they must be interrogating
Perfect	V-ing perfect
I must have interrogated you must have interrogated he must have interrogated we must have interrogated you must have interrogated they must have interrogated	I must have been interrogating you must have been interrogating he must have been interrogating we must have been interrogating you must have been interrogating they must have been interrogating

Negation

Simple form	V-ing form
I must not interrogate you must not interrogate he must not interrogate we must not interrogate you must not interrogate they must not interrogate	I must not be interrogating you must not be interrogating he must not be interrogating we must not be interrogating you must not be interrogating they must not be interrogating
Perfect	V-ing perfect
I must not have interrogated you must not have interrogated he must not have interrogated we must not have interrogated you must not have interrogated they must not have interrogated	I must not have been interrogating you must not have been interrogating he must not have been interrogating we must not have been interrogating you must not have been interrogating they must not have been interrogating

Interrogative form

Simple form	V-ing form
must I interrogate? must you interrogate? must he interrogate? must we interrogate? must you interrogate? must they interrogate?	must I be interrogating? must you be interrogating? must he be interrogating? must we be interrogating? must you be interrogating? must they be interrogating?
Perfect	V-ing perfect
must I have interrogated? must you have interrogated? must he have interrogated? must we have interrogated? must you have interrogated? must they have interrogated?	must I have been interrogating? must you have been interrogating? must he have been interrogating? must we have been interrogating? must you have been interrogating? must they have been interrogating?

Interro-negative form

Simple form	V-ing form
must I not interrogate? must you not interrogate? must he not interrogate? must we not interrogate? must you not interrogate? must they not interrogate?	must I not be interrogating? must you not be interrogating? must he not be interrogating? must we not be interrogating? must you not be interrogating? must they not be interrogating?
Perfect	V-ing perfect
must I not have interrogated? must you not have interrogated? must he not have interrogated? must we not have interrogated? must you not have interrogated? must they not have interrogated?	must I not have been interrogating? must you not have been interrogating? must he not have been interrogating? must we not have been interrogating? must you not have been interrogating? must they not have been interrogating?