could scrub
Verbo regular: scrub - scrubbed- scrubbed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could scrub
you could scrub
he could scrub
we could scrub
you could scrub
they could scrub 	I could be scrubbing
you could be scrubbing
he could be scrubbing
we could be scrubbing
you could be scrubbing
they could be scrubbing	I could have scrubbed
you could have scrubbed
he could have scrubbed
we could have scrubbed
you could have scrubbed
they could have scrubbed	I could have been scrubbing
you could have been scrubbing
he could have been scrubbing
we could have been scrubbing
you could have been scrubbing
they could have been scrubbing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not scrub
you could not scrub
he could not scrub
we could not scrub
you could not scrub
they could not scrub 	I could not be scrubbing
you could not be scrubbing
he could not be scrubbing
we could not be scrubbing
you could not be scrubbing
they could not be scrubbing	I could not have scrubbed
you could not have scrubbed
he could not have scrubbed
we could not have scrubbed
you could not have scrubbed
they could not have scrubbed	I could not have been scrubbing
you could not have been scrubbing
he could not have been scrubbing
we could not have been scrubbing
you could not have been scrubbing
they could not have been scrubbing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I scrub?
could you scrub?
could he scrub?
could we scrub?
could you scrub?
could they scrub? 	could I be scrubbing?
could you be scrubbing?
could he be scrubbing?
could we be scrubbing?
could you be scrubbing?
could they be scrubbing? 	could I have scrubbed?
could you have scrubbed?
could he have scrubbed?
could we have scrubbed?
could you have scrubbed?
could they have scrubbed? 	could I have been scrubbing?
could you have been scrubbing?
could he have been scrubbing?
could we have been scrubbing?
could you have been scrubbing?
could they have been scrubbing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not scrub?
could you not scrub?
could he not scrub?
could we not scrub?
could you not scrub?
could they not scrub? 	could I not be scrubbing?
could you not be scrubbing?
could he not be scrubbing?
could we not be scrubbing?
could you not be scrubbing?
could they not be scrubbing? 	could I not have scrubbed?
could you not have scrubbed?
could he not have scrubbed?
could we not have scrubbed?
could you not have scrubbed?
could they not have scrubbed? 	could I not have been scrubbing?
could you not have been scrubbing?
could he not have been scrubbing?
could we not have been scrubbing?
could you not have been scrubbing?
could they not have been scrubbing?