could proceed
Verbo regular: proceed - proceeded- proceeded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't proceed
you couldn't proceed
she couldn't proceed
we couldn't proceed
you couldn't proceed
they couldn't proceed 	I couldn't be proceeding
you couldn't be proceeding
she couldn't be proceeding
we couldn't be proceeding
you couldn't be proceeding
they couldn't be proceeding	I couldn't have proceeded
you couldn't have proceeded
she couldn't have proceeded
we couldn't have proceeded
you couldn't have proceeded
they couldn't have proceeded	I couldn't have been proceeding
you couldn't have been proceeding
she couldn't have been proceeding
we couldn't have been proceeding
you couldn't have been proceeding
they couldn't have been proceeding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con 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-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I proceed?
couldn't you proceed?
couldn't she proceed?
couldn't we proceed?
couldn't you proceed?
couldn't they proceed? 	couldn't I be proceeding?
couldn't you be proceeding?
couldn't she be proceeding?
couldn't we be proceeding?
couldn't you be proceeding?
couldn't they be proceeding? 	couldn't I have proceeded?
couldn't you have proceeded?
couldn't she have proceeded?
couldn't we have proceeded?
couldn't you have proceeded?
couldn't they have proceeded? 	couldn't I have been proceeding?
couldn't you have been proceeding?
couldn't she have been proceeding?
couldn't we have been proceeding?
couldn't you have been proceeding?
couldn't they have been proceeding?