must corkscrew
Verbo regular: corkscrew - corkscrewed- corkscrewed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must corkscrew
you must corkscrew
he must corkscrew
we must corkscrew
you must corkscrew
they must corkscrew 	I must be corkscrewing
you must be corkscrewing
he must be corkscrewing
we must be corkscrewing
you must be corkscrewing
they must be corkscrewing	I must have corkscrewed
you must have corkscrewed
he must have corkscrewed
we must have corkscrewed
you must have corkscrewed
they must have corkscrewed	I must have been corkscrewing
you must have been corkscrewing
he must have been corkscrewing
we must have been corkscrewing
you must have been corkscrewing
they must have been corkscrewing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't corkscrew
you mustn't corkscrew
he mustn't corkscrew
we mustn't corkscrew
you mustn't corkscrew
they mustn't corkscrew 	I mustn't be corkscrewing
you mustn't be corkscrewing
he mustn't be corkscrewing
we mustn't be corkscrewing
you mustn't be corkscrewing
they mustn't be corkscrewing	I mustn't have corkscrewed
you mustn't have corkscrewed
he mustn't have corkscrewed
we mustn't have corkscrewed
you mustn't have corkscrewed
they mustn't have corkscrewed	I mustn't have been corkscrewing
you mustn't have been corkscrewing
he mustn't have been corkscrewing
we mustn't have been corkscrewing
you mustn't have been corkscrewing
they mustn't have been corkscrewing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I corkscrew?
must you corkscrew?
must he corkscrew?
must we corkscrew?
must you corkscrew?
must they corkscrew? 	must I be corkscrewing?
must you be corkscrewing?
must he be corkscrewing?
must we be corkscrewing?
must you be corkscrewing?
must they be corkscrewing? 	must I have corkscrewed?
must you have corkscrewed?
must he have corkscrewed?
must we have corkscrewed?
must you have corkscrewed?
must they have corkscrewed? 	must I have been corkscrewing?
must you have been corkscrewing?
must he have been corkscrewing?
must we have been corkscrewing?
must you have been corkscrewing?
must they have been corkscrewing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I corkscrew?
mustn't you corkscrew?
mustn't he corkscrew?
mustn't we corkscrew?
mustn't you corkscrew?
mustn't they corkscrew? 	mustn't I be corkscrewing?
mustn't you be corkscrewing?
mustn't he be corkscrewing?
mustn't we be corkscrewing?
mustn't you be corkscrewing?
mustn't they be corkscrewing? 	mustn't I have corkscrewed?
mustn't you have corkscrewed?
mustn't he have corkscrewed?
mustn't we have corkscrewed?
mustn't you have corkscrewed?
mustn't they have corkscrewed? 	mustn't I have been corkscrewing?
mustn't you have been corkscrewing?
mustn't he have been corkscrewing?
mustn't we have been corkscrewing?
mustn't you have been corkscrewing?
mustn't they have been corkscrewing?