could sand
Verbo regular: sand - sanded- sanded

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

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

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

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