English verb conjugation
MUST DEN

Regular verb: den - dened - dened

Affirmation

Simple form	V-ing form
I must den you must den she must den we must den you must den they must den	I must be dening you must be dening she must be dening we must be dening you must be dening they must be dening
Perfect	V-ing perfect
I must have dened you must have dened she must have dened we must have dened you must have dened they must have dened	I must have been dening you must have been dening she must have been dening we must have been dening you must have been dening they must have been dening

Negation

Simple form	V-ing form
I must not den you must not den she must not den we must not den you must not den they must not den	I must not be dening you must not be dening she must not be dening we must not be dening you must not be dening they must not be dening
Perfect	V-ing perfect
I must not have dened you must not have dened she must not have dened we must not have dened you must not have dened they must not have dened	I must not have been dening you must not have been dening she must not have been dening we must not have been dening you must not have been dening they must not have been dening

Interrogative form

Simple form	V-ing form
must I den? must you den? must she den? must we den? must you den? must they den?	must I be dening? must you be dening? must she be dening? must we be dening? must you be dening? must they be dening?
Perfect	V-ing perfect
must I have dened? must you have dened? must she have dened? must we have dened? must you have dened? must they have dened?	must I have been dening? must you have been dening? must she have been dening? must we have been dening? must you have been dening? must they have been dening?

Interro-negative form

Simple form	V-ing form
must I not den? must you not den? must she not den? must we not den? must you not den? must they not den?	must I not be dening? must you not be dening? must she not be dening? must we not be dening? must you not be dening? must they not be dening?
Perfect	V-ing perfect
must I not have dened? must you not have dened? must she not have dened? must we not have dened? must you not have dened? must they not have dened?	must I not have been dening? must you not have been dening? must she not have been dening? must we not have been dening? must you not have been dening? must they not have been dening?