could proceed
Verbo regular: proceed - proceeded- proceeded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could proceed
you could proceed
she could proceed
we could proceed
you could proceed
they could proceed 	I could be proceeding
you could be proceeding
she could be proceeding
we could be proceeding
you could be proceeding
they could be proceeding	I could have proceeded
you could have proceeded
she could have proceeded
we could have proceeded
you could have proceeded
they could have proceeded	I could have been proceeding
you could have been proceeding
she could have been proceeding
we could have been proceeding
you could have been proceeding
they could have been proceeding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not proceed
you could not proceed
she could not proceed
we could not proceed
you could not proceed
they could not proceed 	I could not be proceeding
you could not be proceeding
she could not be proceeding
we could not be proceeding
you could not be proceeding
they could not be proceeding	I could not have proceeded
you could not have proceeded
she could not have proceeded
we could not have proceeded
you could not have proceeded
they could not have proceeded	I could not have been proceeding
you could not have been proceeding
she could not have been proceeding
we could not have been proceeding
you could not have been proceeding
they could not have been proceeding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I proceed?
could you proceed?
could she proceed?
could we proceed?
could you proceed?
could they proceed? 	could I be proceeding?
could you be proceeding?
could she be proceeding?
could we be proceeding?
could you be proceeding?
could they be proceeding? 	could I have proceeded?
could you have proceeded?
could she have proceeded?
could we have proceeded?
could you have proceeded?
could they have proceeded? 	could I have been proceeding?
could you have been proceeding?
could she have been proceeding?
could we have been proceeding?
could you have been proceeding?
could they have been proceeding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not proceed?
could you not proceed?
could she not proceed?
could we not proceed?
could you not proceed?
could they not proceed? 	could I not be proceeding?
could you not be proceeding?
could she not be proceeding?
could we not be proceeding?
could you not be proceeding?
could they not be proceeding? 	could I not have proceeded?
could you not have proceeded?
could she not have proceeded?
could we not have proceeded?
could you not have proceeded?
could they not have proceeded? 	could I not have been proceeding?
could you not have been proceeding?
could she not have been proceeding?
could we not have been proceeding?
could you not have been proceeding?
could they not have been proceeding?