English verb conjugation
MUST REFUSE

Regular verb: refuse - refused - refused

Affirmation

Simple form	V-ing form
I must refuse you must refuse he must refuse we must refuse you must refuse they must refuse	I must be refusing you must be refusing he must be refusing we must be refusing you must be refusing they must be refusing
Perfect	V-ing perfect
I must have refused you must have refused he must have refused we must have refused you must have refused they must have refused	I must have been refusing you must have been refusing he must have been refusing we must have been refusing you must have been refusing they must have been refusing

Negation

Simple form	V-ing form
I must not refuse you must not refuse he must not refuse we must not refuse you must not refuse they must not refuse	I must not be refusing you must not be refusing he must not be refusing we must not be refusing you must not be refusing they must not be refusing
Perfect	V-ing perfect
I must not have refused you must not have refused he must not have refused we must not have refused you must not have refused they must not have refused	I must not have been refusing you must not have been refusing he must not have been refusing we must not have been refusing you must not have been refusing they must not have been refusing

Interrogative form

Simple form	V-ing form
must I refuse? must you refuse? must he refuse? must we refuse? must you refuse? must they refuse?	must I be refusing? must you be refusing? must he be refusing? must we be refusing? must you be refusing? must they be refusing?
Perfect	V-ing perfect
must I have refused? must you have refused? must he have refused? must we have refused? must you have refused? must they have refused?	must I have been refusing? must you have been refusing? must he have been refusing? must we have been refusing? must you have been refusing? must they have been refusing?

Interro-negative form

Simple form	V-ing form
must I not refuse? must you not refuse? must he not refuse? must we not refuse? must you not refuse? must they not refuse?	must I not be refusing? must you not be refusing? must he not be refusing? must we not be refusing? must you not be refusing? must they not be refusing?
Perfect	V-ing perfect
must I not have refused? must you not have refused? must he not have refused? must we not have refused? must you not have refused? must they not have refused?	must I not have been refusing? must you not have been refusing? must he not have been refusing? must we not have been refusing? must you not have been refusing? must they not have been refusing?