must undersell
Verbo irregular: undersell - undersold- undersold

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must undersell
you must undersell
he must undersell
we must undersell
you must undersell
they must undersell 	I must be underselling
you must be underselling
he must be underselling
we must be underselling
you must be underselling
they must be underselling	I must have undersold
you must have undersold
he must have undersold
we must have undersold
you must have undersold
they must have undersold	I must have been underselling
you must have been underselling
he must have been underselling
we must have been underselling
you must have been underselling
they must have been underselling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't undersell
you mustn't undersell
he mustn't undersell
we mustn't undersell
you mustn't undersell
they mustn't undersell 	I mustn't be underselling
you mustn't be underselling
he mustn't be underselling
we mustn't be underselling
you mustn't be underselling
they mustn't be underselling	I mustn't have undersold
you mustn't have undersold
he mustn't have undersold
we mustn't have undersold
you mustn't have undersold
they mustn't have undersold	I mustn't have been underselling
you mustn't have been underselling
he mustn't have been underselling
we mustn't have been underselling
you mustn't have been underselling
they mustn't have been underselling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I undersell?
must you undersell?
must he undersell?
must we undersell?
must you undersell?
must they undersell? 	must I be underselling?
must you be underselling?
must he be underselling?
must we be underselling?
must you be underselling?
must they be underselling? 	must I have undersold?
must you have undersold?
must he have undersold?
must we have undersold?
must you have undersold?
must they have undersold? 	must I have been underselling?
must you have been underselling?
must he have been underselling?
must we have been underselling?
must you have been underselling?
must they have been underselling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I undersell?
mustn't you undersell?
mustn't he undersell?
mustn't we undersell?
mustn't you undersell?
mustn't they undersell? 	mustn't I be underselling?
mustn't you be underselling?
mustn't he be underselling?
mustn't we be underselling?
mustn't you be underselling?
mustn't they be underselling? 	mustn't I have undersold?
mustn't you have undersold?
mustn't he have undersold?
mustn't we have undersold?
mustn't you have undersold?
mustn't they have undersold? 	mustn't I have been underselling?
mustn't you have been underselling?
mustn't he have been underselling?
mustn't we have been underselling?
mustn't you have been underselling?
mustn't they have been underselling?