must ulcerate
Regular verb: ulcerate - ulcerated- ulcerated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ulcerate
you must ulcerate
she must ulcerate
we must ulcerate
you must ulcerate
they must ulcerate 	I must be ulcerating
you must be ulcerating
she must be ulcerating
we must be ulcerating
you must be ulcerating
they must be ulcerating	I must have ulcerated
you must have ulcerated
she must have ulcerated
we must have ulcerated
you must have ulcerated
they must have ulcerated	I must have been ulcerating
you must have been ulcerating
she must have been ulcerating
we must have been ulcerating
you must have been ulcerating
they must have been ulcerating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not ulcerate
you must not ulcerate
she must not ulcerate
we must not ulcerate
you must not ulcerate
they must not ulcerate 	I must not be ulcerating
you must not be ulcerating
she must not be ulcerating
we must not be ulcerating
you must not be ulcerating
they must not be ulcerating	I must not have ulcerated
you must not have ulcerated
she must not have ulcerated
we must not have ulcerated
you must not have ulcerated
they must not have ulcerated	I must not have been ulcerating
you must not have been ulcerating
she must not have been ulcerating
we must not have been ulcerating
you must not have been ulcerating
they must not have been ulcerating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ulcerate?
must you ulcerate?
must she ulcerate?
must we ulcerate?
must you ulcerate?
must they ulcerate? 	must I be ulcerating?
must you be ulcerating?
must she be ulcerating?
must we be ulcerating?
must you be ulcerating?
must they be ulcerating? 	must I have ulcerated?
must you have ulcerated?
must she have ulcerated?
must we have ulcerated?
must you have ulcerated?
must they have ulcerated? 	must I have been ulcerating?
must you have been ulcerating?
must she have been ulcerating?
must we have been ulcerating?
must you have been ulcerating?
must they have been ulcerating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not ulcerate?
must you not ulcerate?
must she not ulcerate?
must we not ulcerate?
must you not ulcerate?
must they not ulcerate? 	must I not be ulcerating?
must you not be ulcerating?
must she not be ulcerating?
must we not be ulcerating?
must you not be ulcerating?
must they not be ulcerating? 	must I not have ulcerated?
must you not have ulcerated?
must she not have ulcerated?
must we not have ulcerated?
must you not have ulcerated?
must they not have ulcerated? 	must I not have been ulcerating?
must you not have been ulcerating?
must she not have been ulcerating?
must we not have been ulcerating?
must you not have been ulcerating?
must they not have been ulcerating?