could delve
Verbo regular: delve - delved- delved

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could delve
you could delve
he could delve
we could delve
you could delve
they could delve 	I could be delving
you could be delving
he could be delving
we could be delving
you could be delving
they could be delving	I could have delved
you could have delved
he could have delved
we could have delved
you could have delved
they could have delved	I could have been delving
you could have been delving
he could have been delving
we could have been delving
you could have been delving
they could have been delving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not delve
you could not delve
he could not delve
we could not delve
you could not delve
they could not delve 	I could not be delving
you could not be delving
he could not be delving
we could not be delving
you could not be delving
they could not be delving	I could not have delved
you could not have delved
he could not have delved
we could not have delved
you could not have delved
they could not have delved	I could not have been delving
you could not have been delving
he could not have been delving
we could not have been delving
you could not have been delving
they could not have been delving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I delve?
could you delve?
could he delve?
could we delve?
could you delve?
could they delve? 	could I be delving?
could you be delving?
could he be delving?
could we be delving?
could you be delving?
could they be delving? 	could I have delved?
could you have delved?
could he have delved?
could we have delved?
could you have delved?
could they have delved? 	could I have been delving?
could you have been delving?
could he have been delving?
could we have been delving?
could you have been delving?
could they have been delving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not delve?
could you not delve?
could he not delve?
could we not delve?
could you not delve?
could they not delve? 	could I not be delving?
could you not be delving?
could he not be delving?
could we not be delving?
could you not be delving?
could they not be delving? 	could I not have delved?
could you not have delved?
could he not have delved?
could we not have delved?
could you not have delved?
could they not have delved? 	could I not have been delving?
could you not have been delving?
could he not have been delving?
could we not have been delving?
could you not have been delving?
could they not have been delving?