could spec
Verbo regular: spec - speced- speced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could spec
you could spec
he could spec
we could spec
you could spec
they could spec 	I could be specing
you could be specing
he could be specing
we could be specing
you could be specing
they could be specing	I could have speced
you could have speced
he could have speced
we could have speced
you could have speced
they could have speced	I could have been specing
you could have been specing
he could have been specing
we could have been specing
you could have been specing
they could have been specing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not spec
you could not spec
he could not spec
we could not spec
you could not spec
they could not spec 	I could not be specing
you could not be specing
he could not be specing
we could not be specing
you could not be specing
they could not be specing	I could not have speced
you could not have speced
he could not have speced
we could not have speced
you could not have speced
they could not have speced	I could not have been specing
you could not have been specing
he could not have been specing
we could not have been specing
you could not have been specing
they could not have been specing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I spec?
could you spec?
could he spec?
could we spec?
could you spec?
could they spec? 	could I be specing?
could you be specing?
could he be specing?
could we be specing?
could you be specing?
could they be specing? 	could I have speced?
could you have speced?
could he have speced?
could we have speced?
could you have speced?
could they have speced? 	could I have been specing?
could you have been specing?
could he have been specing?
could we have been specing?
could you have been specing?
could they have been specing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not spec?
could you not spec?
could he not spec?
could we not spec?
could you not spec?
could they not spec? 	could I not be specing?
could you not be specing?
could he not be specing?
could we not be specing?
could you not be specing?
could they not be specing? 	could I not have speced?
could you not have speced?
could he not have speced?
could we not have speced?
could you not have speced?
could they not have speced? 	could I not have been specing?
could you not have been specing?
could he not have been specing?
could we not have been specing?
could you not have been specing?
could they not have been specing?