I must debase you must debase she must debase we must debase you must debase they must debase
V-ing form
I must be debasing you must be debasing she must be debasing we must be debasing you must be debasing they must be debasing
Perfect
I must have debased you must have debased she must have debased we must have debased you must have debased they must have debased
V-ing perfect
I must have been debasing you must have been debasing she must have been debasing we must have been debasing you must have been debasing they must have been debasing
Negation
Simple form
I must not debase you must not debase she must not debase we must not debase you must not debase they must not debase
V-ing form
I must not be debasing you must not be debasing she must not be debasing we must not be debasing you must not be debasing they must not be debasing
Perfect
I must not have debased you must not have debased she must not have debased we must not have debased you must not have debased they must not have debased
V-ing perfect
I must not have been debasing you must not have been debasing she must not have been debasing we must not have been debasing you must not have been debasing they must not have been debasing
Interrogative form
Simple form
must I debase? must you debase? must she debase? must we debase? must you debase? must they debase?
V-ing form
must I be debasing? must you be debasing? must she be debasing? must we be debasing? must you be debasing? must they be debasing?
Perfect
must I have debased? must you have debased? must she have debased? must we have debased? must you have debased? must they have debased?
V-ing perfect
must I have been debasing? must you have been debasing? must she have been debasing? must we have been debasing? must you have been debasing? must they have been debasing?
Interro-negative form
Simple form
must I not debase? must you not debase? must she not debase? must we not debase? must you not debase? must they not debase?
V-ing form
must I not be debasing? must you not be debasing? must she not be debasing? must we not be debasing? must you not be debasing? must they not be debasing?
Perfect
must I not have debased? must you not have debased? must she not have debased? must we not have debased? must you not have debased? must they not have debased?
V-ing perfect
must I not have been debasing? must you not have been debasing? must she not have been debasing? must we not have been debasing? must you not have been debasing? must they not have been debasing?