English verb conjugation
MUST ATTRIBUTE

Regular verb: attribute - attributed - attributed

Affirmation

Simple form	V-ing form
I must attribute you must attribute she must attribute we must attribute you must attribute they must attribute	I must be attributing you must be attributing she must be attributing we must be attributing you must be attributing they must be attributing
Perfect	V-ing perfect
I must have attributed you must have attributed she must have attributed we must have attributed you must have attributed they must have attributed	I must have been attributing you must have been attributing she must have been attributing we must have been attributing you must have been attributing they must have been attributing

Negation

Simple form	V-ing form
I must not attribute you must not attribute she must not attribute we must not attribute you must not attribute they must not attribute	I must not be attributing you must not be attributing she must not be attributing we must not be attributing you must not be attributing they must not be attributing
Perfect	V-ing perfect
I must not have attributed you must not have attributed she must not have attributed we must not have attributed you must not have attributed they must not have attributed	I must not have been attributing you must not have been attributing she must not have been attributing we must not have been attributing you must not have been attributing they must not have been attributing

Interrogative form

Simple form	V-ing form
must I attribute? must you attribute? must she attribute? must we attribute? must you attribute? must they attribute?	must I be attributing? must you be attributing? must she be attributing? must we be attributing? must you be attributing? must they be attributing?
Perfect	V-ing perfect
must I have attributed? must you have attributed? must she have attributed? must we have attributed? must you have attributed? must they have attributed?	must I have been attributing? must you have been attributing? must she have been attributing? must we have been attributing? must you have been attributing? must they have been attributing?

Interro-negative form

Simple form	V-ing form
must I not attribute? must you not attribute? must she not attribute? must we not attribute? must you not attribute? must they not attribute?	must I not be attributing? must you not be attributing? must she not be attributing? must we not be attributing? must you not be attributing? must they not be attributing?
Perfect	V-ing perfect
must I not have attributed? must you not have attributed? must she not have attributed? must we not have attributed? must you not have attributed? must they not have attributed?	must I not have been attributing? must you not have been attributing? must she not have been attributing? must we not have been attributing? must you not have been attributing? must they not have been attributing?