English verb conjugation
MUST ATTRIBUTE

Regular verb: attribute - attributed - attributed

Affirmation

Simple form	V-ing form
I must attribute you must attribute he must attribute we must attribute you must attribute they must attribute	I must be attributing you must be attributing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he attribute? must we attribute? must you attribute? must they attribute?	must I be attributing? must you be attributing? must he 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 he 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 he 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 he 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 he 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 he 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 he not have been attributing? must we not have been attributing? must you not have been attributing? must they not have been attributing?