must sand
Verbo regular: sand - sanded- sanded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must sand
you must sand
he must sand
we must sand
you must sand
they must sand 	I must be sanding
you must be sanding
he must be sanding
we must be sanding
you must be sanding
they must be sanding	I must have sanded
you must have sanded
he must have sanded
we must have sanded
you must have sanded
they must have sanded	I must have been sanding
you must have been sanding
he must have been sanding
we must have been sanding
you must have been sanding
they must have been sanding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't sand
you mustn't sand
he mustn't sand
we mustn't sand
you mustn't sand
they mustn't sand 	I mustn't be sanding
you mustn't be sanding
he mustn't be sanding
we mustn't be sanding
you mustn't be sanding
they mustn't be sanding	I mustn't have sanded
you mustn't have sanded
he mustn't have sanded
we mustn't have sanded
you mustn't have sanded
they mustn't have sanded	I mustn't have been sanding
you mustn't have been sanding
he mustn't have been sanding
we mustn't have been sanding
you mustn't have been sanding
they mustn't have been sanding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I sand?
must you sand?
must he sand?
must we sand?
must you sand?
must they sand? 	must I be sanding?
must you be sanding?
must he be sanding?
must we be sanding?
must you be sanding?
must they be sanding? 	must I have sanded?
must you have sanded?
must he have sanded?
must we have sanded?
must you have sanded?
must they have sanded? 	must I have been sanding?
must you have been sanding?
must he have been sanding?
must we have been sanding?
must you have been sanding?
must they have been sanding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I sand?
mustn't you sand?
mustn't he sand?
mustn't we sand?
mustn't you sand?
mustn't they sand? 	mustn't I be sanding?
mustn't you be sanding?
mustn't he be sanding?
mustn't we be sanding?
mustn't you be sanding?
mustn't they be sanding? 	mustn't I have sanded?
mustn't you have sanded?
mustn't he have sanded?
mustn't we have sanded?
mustn't you have sanded?
mustn't they have sanded? 	mustn't I have been sanding?
mustn't you have been sanding?
mustn't he have been sanding?
mustn't we have been sanding?
mustn't you have been sanding?
mustn't they have been sanding?