must tranquillize
Regular verb: tranquillize - tranquillized- tranquillized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must tranquillize
you must tranquillize
she must tranquillize
we must tranquillize
you must tranquillize
they must tranquillize 	I must be tranquillizing
you must be tranquillizing
she must be tranquillizing
we must be tranquillizing
you must be tranquillizing
they must be tranquillizing	I must have tranquillized
you must have tranquillized
she must have tranquillized
we must have tranquillized
you must have tranquillized
they must have tranquillized	I must have been tranquillizing
you must have been tranquillizing
she must have been tranquillizing
we must have been tranquillizing
you must have been tranquillizing
they must have been tranquillizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't tranquillize
you mustn't tranquillize
she mustn't tranquillize
we mustn't tranquillize
you mustn't tranquillize
they mustn't tranquillize 	I mustn't be tranquillizing
you mustn't be tranquillizing
she mustn't be tranquillizing
we mustn't be tranquillizing
you mustn't be tranquillizing
they mustn't be tranquillizing	I mustn't have tranquillized
you mustn't have tranquillized
she mustn't have tranquillized
we mustn't have tranquillized
you mustn't have tranquillized
they mustn't have tranquillized	I mustn't have been tranquillizing
you mustn't have been tranquillizing
she mustn't have been tranquillizing
we mustn't have been tranquillizing
you mustn't have been tranquillizing
they mustn't have been tranquillizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I tranquillize?
must you tranquillize?
must she tranquillize?
must we tranquillize?
must you tranquillize?
must they tranquillize? 	must I be tranquillizing?
must you be tranquillizing?
must she be tranquillizing?
must we be tranquillizing?
must you be tranquillizing?
must they be tranquillizing? 	must I have tranquillized?
must you have tranquillized?
must she have tranquillized?
must we have tranquillized?
must you have tranquillized?
must they have tranquillized? 	must I have been tranquillizing?
must you have been tranquillizing?
must she have been tranquillizing?
must we have been tranquillizing?
must you have been tranquillizing?
must they have been tranquillizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I tranquillize?
mustn't you tranquillize?
mustn't she tranquillize?
mustn't we tranquillize?
mustn't you tranquillize?
mustn't they tranquillize? 	mustn't I be tranquillizing?
mustn't you be tranquillizing?
mustn't she be tranquillizing?
mustn't we be tranquillizing?
mustn't you be tranquillizing?
mustn't they be tranquillizing? 	mustn't I have tranquillized?
mustn't you have tranquillized?
mustn't she have tranquillized?
mustn't we have tranquillized?
mustn't you have tranquillized?
mustn't they have tranquillized? 	mustn't I have been tranquillizing?
mustn't you have been tranquillizing?
mustn't she have been tranquillizing?
mustn't we have been tranquillizing?
mustn't you have been tranquillizing?
mustn't they have been tranquillizing?