must blackball
Verbo regular: blackball - blackballed- blackballed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must blackball
you must blackball
he must blackball
we must blackball
you must blackball
they must blackball 	I must be blackballing
you must be blackballing
he must be blackballing
we must be blackballing
you must be blackballing
they must be blackballing	I must have blackballed
you must have blackballed
he must have blackballed
we must have blackballed
you must have blackballed
they must have blackballed	I must have been blackballing
you must have been blackballing
he must have been blackballing
we must have been blackballing
you must have been blackballing
they must have been blackballing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't blackball
you mustn't blackball
he mustn't blackball
we mustn't blackball
you mustn't blackball
they mustn't blackball 	I mustn't be blackballing
you mustn't be blackballing
he mustn't be blackballing
we mustn't be blackballing
you mustn't be blackballing
they mustn't be blackballing	I mustn't have blackballed
you mustn't have blackballed
he mustn't have blackballed
we mustn't have blackballed
you mustn't have blackballed
they mustn't have blackballed	I mustn't have been blackballing
you mustn't have been blackballing
he mustn't have been blackballing
we mustn't have been blackballing
you mustn't have been blackballing
they mustn't have been blackballing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I blackball?
must you blackball?
must he blackball?
must we blackball?
must you blackball?
must they blackball? 	must I be blackballing?
must you be blackballing?
must he be blackballing?
must we be blackballing?
must you be blackballing?
must they be blackballing? 	must I have blackballed?
must you have blackballed?
must he have blackballed?
must we have blackballed?
must you have blackballed?
must they have blackballed? 	must I have been blackballing?
must you have been blackballing?
must he have been blackballing?
must we have been blackballing?
must you have been blackballing?
must they have been blackballing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I blackball?
mustn't you blackball?
mustn't he blackball?
mustn't we blackball?
mustn't you blackball?
mustn't they blackball? 	mustn't I be blackballing?
mustn't you be blackballing?
mustn't he be blackballing?
mustn't we be blackballing?
mustn't you be blackballing?
mustn't they be blackballing? 	mustn't I have blackballed?
mustn't you have blackballed?
mustn't he have blackballed?
mustn't we have blackballed?
mustn't you have blackballed?
mustn't they have blackballed? 	mustn't I have been blackballing?
mustn't you have been blackballing?
mustn't he have been blackballing?
mustn't we have been blackballing?
mustn't you have been blackballing?
mustn't they have been blackballing?