could deterge
Verbo regular: deterge - deterged- deterged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could deterge
you could deterge
she could deterge
we could deterge
you could deterge
they could deterge 	I could be deterging
you could be deterging
she could be deterging
we could be deterging
you could be deterging
they could be deterging	I could have deterged
you could have deterged
she could have deterged
we could have deterged
you could have deterged
they could have deterged	I could have been deterging
you could have been deterging
she could have been deterging
we could have been deterging
you could have been deterging
they could have been deterging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not deterge
you could not deterge
she could not deterge
we could not deterge
you could not deterge
they could not deterge 	I could not be deterging
you could not be deterging
she could not be deterging
we could not be deterging
you could not be deterging
they could not be deterging	I could not have deterged
you could not have deterged
she could not have deterged
we could not have deterged
you could not have deterged
they could not have deterged	I could not have been deterging
you could not have been deterging
she could not have been deterging
we could not have been deterging
you could not have been deterging
they could not have been deterging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I deterge?
could you deterge?
could she deterge?
could we deterge?
could you deterge?
could they deterge? 	could I be deterging?
could you be deterging?
could she be deterging?
could we be deterging?
could you be deterging?
could they be deterging? 	could I have deterged?
could you have deterged?
could she have deterged?
could we have deterged?
could you have deterged?
could they have deterged? 	could I have been deterging?
could you have been deterging?
could she have been deterging?
could we have been deterging?
could you have been deterging?
could they have been deterging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not deterge?
could you not deterge?
could she not deterge?
could we not deterge?
could you not deterge?
could they not deterge? 	could I not be deterging?
could you not be deterging?
could she not be deterging?
could we not be deterging?
could you not be deterging?
could they not be deterging? 	could I not have deterged?
could you not have deterged?
could she not have deterged?
could we not have deterged?
could you not have deterged?
could they not have deterged? 	could I not have been deterging?
could you not have been deterging?
could she not have been deterging?
could we not have been deterging?
could you not have been deterging?
could they not have been deterging?