English verb conjugation
MUST CONFER

Regular verb: confer - conferred - conferred

Affirmation

Simple form	V-ing form
I must confer you must confer he must confer we must confer you must confer they must confer	I must be conferring you must be conferring he must be conferring we must be conferring you must be conferring they must be conferring
Perfect	V-ing perfect
I must have conferred you must have conferred he must have conferred we must have conferred you must have conferred they must have conferred	I must have been conferring you must have been conferring he must have been conferring we must have been conferring you must have been conferring they must have been conferring

Negation

Simple form	V-ing form
I must not confer you must not confer he must not confer we must not confer you must not confer they must not confer	I must not be conferring you must not be conferring he must not be conferring we must not be conferring you must not be conferring they must not be conferring
Perfect	V-ing perfect
I must not have conferred you must not have conferred he must not have conferred we must not have conferred you must not have conferred they must not have conferred	I must not have been conferring you must not have been conferring he must not have been conferring we must not have been conferring you must not have been conferring they must not have been conferring

Interrogative form

Simple form	V-ing form
must I confer? must you confer? must he confer? must we confer? must you confer? must they confer?	must I be conferring? must you be conferring? must he be conferring? must we be conferring? must you be conferring? must they be conferring?
Perfect	V-ing perfect
must I have conferred? must you have conferred? must he have conferred? must we have conferred? must you have conferred? must they have conferred?	must I have been conferring? must you have been conferring? must he have been conferring? must we have been conferring? must you have been conferring? must they have been conferring?

Interro-negative form

Simple form	V-ing form
must I not confer? must you not confer? must he not confer? must we not confer? must you not confer? must they not confer?	must I not be conferring? must you not be conferring? must he not be conferring? must we not be conferring? must you not be conferring? must they not be conferring?
Perfect	V-ing perfect
must I not have conferred? must you not have conferred? must he not have conferred? must we not have conferred? must you not have conferred? must they not have conferred?	must I not have been conferring? must you not have been conferring? must he not have been conferring? must we not have been conferring? must you not have been conferring? must they not have been conferring?