must debase
Regular verb: debase - debased- debased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must debase
you must debase
she must debase
we must debase
you must debase
they must debase 	I must be debasing
you must be debasing
she must be debasing
we must be debasing
you must be debasing
they must be debasing	I must have debased
you must have debased
she must have debased
we must have debased
you must have debased
they must have debased	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 	V-ing form 	Perfect 	V-ing perfect 	
I must not debase
you must not debase
she must not debase
we must not debase
you must not debase
they must not debase 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I debase?
must you debase?
must she debase?
must we debase?
must you debase?
must they debase? 	must I be debasing?
must you be debasing?
must she be debasing?
must we be debasing?
must you be debasing?
must they be debasing? 	must I have debased?
must you have debased?
must she have debased?
must we have debased?
must you have debased?
must they have debased? 	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 	V-ing form 	Perfect 	V-ing perfect 	
must I not debase?
must you not debase?
must she not debase?
must we not debase?
must you not debase?
must they not debase? 	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? 	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? 	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?