must unveil
Regular verb: unveil - unveiled- unveiled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unveil
you must unveil
she must unveil
we must unveil
you must unveil
they must unveil 	I must be unveiling
you must be unveiling
she must be unveiling
we must be unveiling
you must be unveiling
they must be unveiling	I must have unveiled
you must have unveiled
she must have unveiled
we must have unveiled
you must have unveiled
they must have unveiled	I must have been unveiling
you must have been unveiling
she must have been unveiling
we must have been unveiling
you must have been unveiling
they must have been unveiling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unveil
you mustn't unveil
she mustn't unveil
we mustn't unveil
you mustn't unveil
they mustn't unveil 	I mustn't be unveiling
you mustn't be unveiling
she mustn't be unveiling
we mustn't be unveiling
you mustn't be unveiling
they mustn't be unveiling	I mustn't have unveiled
you mustn't have unveiled
she mustn't have unveiled
we mustn't have unveiled
you mustn't have unveiled
they mustn't have unveiled	I mustn't have been unveiling
you mustn't have been unveiling
she mustn't have been unveiling
we mustn't have been unveiling
you mustn't have been unveiling
they mustn't have been unveiling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unveil?
must you unveil?
must she unveil?
must we unveil?
must you unveil?
must they unveil? 	must I be unveiling?
must you be unveiling?
must she be unveiling?
must we be unveiling?
must you be unveiling?
must they be unveiling? 	must I have unveiled?
must you have unveiled?
must she have unveiled?
must we have unveiled?
must you have unveiled?
must they have unveiled? 	must I have been unveiling?
must you have been unveiling?
must she have been unveiling?
must we have been unveiling?
must you have been unveiling?
must they have been unveiling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unveil?
mustn't you unveil?
mustn't she unveil?
mustn't we unveil?
mustn't you unveil?
mustn't they unveil? 	mustn't I be unveiling?
mustn't you be unveiling?
mustn't she be unveiling?
mustn't we be unveiling?
mustn't you be unveiling?
mustn't they be unveiling? 	mustn't I have unveiled?
mustn't you have unveiled?
mustn't she have unveiled?
mustn't we have unveiled?
mustn't you have unveiled?
mustn't they have unveiled? 	mustn't I have been unveiling?
mustn't you have been unveiling?
mustn't she have been unveiling?
mustn't we have been unveiling?
mustn't you have been unveiling?
mustn't they have been unveiling?