must adumbrate
Regular verb: adumbrate - adumbrated- adumbrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must adumbrate
you must adumbrate
he must adumbrate
we must adumbrate
you must adumbrate
they must adumbrate 	I must be adumbrating
you must be adumbrating
he must be adumbrating
we must be adumbrating
you must be adumbrating
they must be adumbrating	I must have adumbrated
you must have adumbrated
he must have adumbrated
we must have adumbrated
you must have adumbrated
they must have adumbrated	I must have been adumbrating
you must have been adumbrating
he must have been adumbrating
we must have been adumbrating
you must have been adumbrating
they must have been adumbrating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not adumbrate
you must not adumbrate
he must not adumbrate
we must not adumbrate
you must not adumbrate
they must not adumbrate 	I must not be adumbrating
you must not be adumbrating
he must not be adumbrating
we must not be adumbrating
you must not be adumbrating
they must not be adumbrating	I must not have adumbrated
you must not have adumbrated
he must not have adumbrated
we must not have adumbrated
you must not have adumbrated
they must not have adumbrated	I must not have been adumbrating
you must not have been adumbrating
he must not have been adumbrating
we must not have been adumbrating
you must not have been adumbrating
they must not have been adumbrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I adumbrate?
must you adumbrate?
must he adumbrate?
must we adumbrate?
must you adumbrate?
must they adumbrate? 	must I be adumbrating?
must you be adumbrating?
must he be adumbrating?
must we be adumbrating?
must you be adumbrating?
must they be adumbrating? 	must I have adumbrated?
must you have adumbrated?
must he have adumbrated?
must we have adumbrated?
must you have adumbrated?
must they have adumbrated? 	must I have been adumbrating?
must you have been adumbrating?
must he have been adumbrating?
must we have been adumbrating?
must you have been adumbrating?
must they have been adumbrating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not adumbrate?
must you not adumbrate?
must he not adumbrate?
must we not adumbrate?
must you not adumbrate?
must they not adumbrate? 	must I not be adumbrating?
must you not be adumbrating?
must he not be adumbrating?
must we not be adumbrating?
must you not be adumbrating?
must they not be adumbrating? 	must I not have adumbrated?
must you not have adumbrated?
must he not have adumbrated?
must we not have adumbrated?
must you not have adumbrated?
must they not have adumbrated? 	must I not have been adumbrating?
must you not have been adumbrating?
must he not have been adumbrating?
must we not have been adumbrating?
must you not have been adumbrating?
must they not have been adumbrating?