English verb conjugation
MUST DEMUR

Regular verb: demur - demurred - demurred

Affirmation

Simple form	V-ing form
I must demur you must demur he must demur we must demur you must demur they must demur	I must be demurring you must be demurring he must be demurring we must be demurring you must be demurring they must be demurring
Perfect	V-ing perfect
I must have demurred you must have demurred he must have demurred we must have demurred you must have demurred they must have demurred	I must have been demurring you must have been demurring he must have been demurring we must have been demurring you must have been demurring they must have been demurring

Negation

Simple form	V-ing form
I must not demur you must not demur he must not demur we must not demur you must not demur they must not demur	I must not be demurring you must not be demurring he must not be demurring we must not be demurring you must not be demurring they must not be demurring
Perfect	V-ing perfect
I must not have demurred you must not have demurred he must not have demurred we must not have demurred you must not have demurred they must not have demurred	I must not have been demurring you must not have been demurring he must not have been demurring we must not have been demurring you must not have been demurring they must not have been demurring

Interrogative form

Simple form	V-ing form
must I demur? must you demur? must he demur? must we demur? must you demur? must they demur?	must I be demurring? must you be demurring? must he be demurring? must we be demurring? must you be demurring? must they be demurring?
Perfect	V-ing perfect
must I have demurred? must you have demurred? must he have demurred? must we have demurred? must you have demurred? must they have demurred?	must I have been demurring? must you have been demurring? must he have been demurring? must we have been demurring? must you have been demurring? must they have been demurring?

Interro-negative form

Simple form	V-ing form
must I not demur? must you not demur? must he not demur? must we not demur? must you not demur? must they not demur?	must I not be demurring? must you not be demurring? must he not be demurring? must we not be demurring? must you not be demurring? must they not be demurring?
Perfect	V-ing perfect
must I not have demurred? must you not have demurred? must he not have demurred? must we not have demurred? must you not have demurred? must they not have demurred?	must I not have been demurring? must you not have been demurring? must he not have been demurring? must we not have been demurring? must you not have been demurring? must they not have been demurring?