could delay
Verbo regular: delay - delayed- delayed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could delay
you could delay
she could delay
we could delay
you could delay
they could delay 	I could be delaying
you could be delaying
she could be delaying
we could be delaying
you could be delaying
they could be delaying	I could have delayed
you could have delayed
she could have delayed
we could have delayed
you could have delayed
they could have delayed	I could have been delaying
you could have been delaying
she could have been delaying
we could have been delaying
you could have been delaying
they could have been delaying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't delay
you couldn't delay
she couldn't delay
we couldn't delay
you couldn't delay
they couldn't delay 	I couldn't be delaying
you couldn't be delaying
she couldn't be delaying
we couldn't be delaying
you couldn't be delaying
they couldn't be delaying	I couldn't have delayed
you couldn't have delayed
she couldn't have delayed
we couldn't have delayed
you couldn't have delayed
they couldn't have delayed	I couldn't have been delaying
you couldn't have been delaying
she couldn't have been delaying
we couldn't have been delaying
you couldn't have been delaying
they couldn't have been delaying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I delay?
could you delay?
could she delay?
could we delay?
could you delay?
could they delay? 	could I be delaying?
could you be delaying?
could she be delaying?
could we be delaying?
could you be delaying?
could they be delaying? 	could I have delayed?
could you have delayed?
could she have delayed?
could we have delayed?
could you have delayed?
could they have delayed? 	could I have been delaying?
could you have been delaying?
could she have been delaying?
could we have been delaying?
could you have been delaying?
could they have been delaying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I delay?
couldn't you delay?
couldn't she delay?
couldn't we delay?
couldn't you delay?
couldn't they delay? 	couldn't I be delaying?
couldn't you be delaying?
couldn't she be delaying?
couldn't we be delaying?
couldn't you be delaying?
couldn't they be delaying? 	couldn't I have delayed?
couldn't you have delayed?
couldn't she have delayed?
couldn't we have delayed?
couldn't you have delayed?
couldn't they have delayed? 	couldn't I have been delaying?
couldn't you have been delaying?
couldn't she have been delaying?
couldn't we have been delaying?
couldn't you have been delaying?
couldn't they have been delaying?