could brush
Verbo regular: brush - brushed- brushed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could brush
you could brush
she could brush
we could brush
you could brush
they could brush 	I could be brushing
you could be brushing
she could be brushing
we could be brushing
you could be brushing
they could be brushing	I could have brushed
you could have brushed
she could have brushed
we could have brushed
you could have brushed
they could have brushed	I could have been brushing
you could have been brushing
she could have been brushing
we could have been brushing
you could have been brushing
they could have been brushing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't brush
you couldn't brush
she couldn't brush
we couldn't brush
you couldn't brush
they couldn't brush 	I couldn't be brushing
you couldn't be brushing
she couldn't be brushing
we couldn't be brushing
you couldn't be brushing
they couldn't be brushing	I couldn't have brushed
you couldn't have brushed
she couldn't have brushed
we couldn't have brushed
you couldn't have brushed
they couldn't have brushed	I couldn't have been brushing
you couldn't have been brushing
she couldn't have been brushing
we couldn't have been brushing
you couldn't have been brushing
they couldn't have been brushing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I brush?
could you brush?
could she brush?
could we brush?
could you brush?
could they brush? 	could I be brushing?
could you be brushing?
could she be brushing?
could we be brushing?
could you be brushing?
could they be brushing? 	could I have brushed?
could you have brushed?
could she have brushed?
could we have brushed?
could you have brushed?
could they have brushed? 	could I have been brushing?
could you have been brushing?
could she have been brushing?
could we have been brushing?
could you have been brushing?
could they have been brushing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I brush?
couldn't you brush?
couldn't she brush?
couldn't we brush?
couldn't you brush?
couldn't they brush? 	couldn't I be brushing?
couldn't you be brushing?
couldn't she be brushing?
couldn't we be brushing?
couldn't you be brushing?
couldn't they be brushing? 	couldn't I have brushed?
couldn't you have brushed?
couldn't she have brushed?
couldn't we have brushed?
couldn't you have brushed?
couldn't they have brushed? 	couldn't I have been brushing?
couldn't you have been brushing?
couldn't she have been brushing?
couldn't we have been brushing?
couldn't you have been brushing?
couldn't they have been brushing?