must mess
Verbo regular: mess - messed- messed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must mess
you must mess
he must mess
we must mess
you must mess
they must mess 	I must be messing
you must be messing
he must be messing
we must be messing
you must be messing
they must be messing	I must have messed
you must have messed
he must have messed
we must have messed
you must have messed
they must have messed	I must have been messing
you must have been messing
he must have been messing
we must have been messing
you must have been messing
they must have been messing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't mess
you mustn't mess
he mustn't mess
we mustn't mess
you mustn't mess
they mustn't mess 	I mustn't be messing
you mustn't be messing
he mustn't be messing
we mustn't be messing
you mustn't be messing
they mustn't be messing	I mustn't have messed
you mustn't have messed
he mustn't have messed
we mustn't have messed
you mustn't have messed
they mustn't have messed	I mustn't have been messing
you mustn't have been messing
he mustn't have been messing
we mustn't have been messing
you mustn't have been messing
they mustn't have been messing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I mess?
must you mess?
must he mess?
must we mess?
must you mess?
must they mess? 	must I be messing?
must you be messing?
must he be messing?
must we be messing?
must you be messing?
must they be messing? 	must I have messed?
must you have messed?
must he have messed?
must we have messed?
must you have messed?
must they have messed? 	must I have been messing?
must you have been messing?
must he have been messing?
must we have been messing?
must you have been messing?
must they have been messing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I mess?
mustn't you mess?
mustn't he mess?
mustn't we mess?
mustn't you mess?
mustn't they mess? 	mustn't I be messing?
mustn't you be messing?
mustn't he be messing?
mustn't we be messing?
mustn't you be messing?
mustn't they be messing? 	mustn't I have messed?
mustn't you have messed?
mustn't he have messed?
mustn't we have messed?
mustn't you have messed?
mustn't they have messed? 	mustn't I have been messing?
mustn't you have been messing?
mustn't he have been messing?
mustn't we have been messing?
mustn't you have been messing?
mustn't they have been messing?