I could confer you could confer she could confer we could confer you could confer they could confer
Forma con V-ing
I could be conferring you could be conferring she could be conferring we could be conferring you could be conferring they could be conferring
Perfecto
I could have conferred you could have conferred she could have conferred we could have conferred you could have conferred they could have conferred
Perfecto con V-ing
I could have been conferring you could have been conferring she could have been conferring we could have been conferring you could have been conferring they could have been conferring
Negación
Forma simple
I could not confer you could not confer she could not confer we could not confer you could not confer they could not confer
Forma con V-ing
I could not be conferring you could not be conferring she could not be conferring we could not be conferring you could not be conferring they could not be conferring
Perfecto
I could not have conferred you could not have conferred she could not have conferred we could not have conferred you could not have conferred they could not have conferred
Perfecto con V-ing
I could not have been conferring you could not have been conferring she could not have been conferring we could not have been conferring you could not have been conferring they could not have been conferring
Forma interrogativa
Forma simple
could I confer? could you confer? could she confer? could we confer? could you confer? could they confer?
Forma con V-ing
could I be conferring? could you be conferring? could she be conferring? could we be conferring? could you be conferring? could they be conferring?
Perfecto
could I have conferred? could you have conferred? could she have conferred? could we have conferred? could you have conferred? could they have conferred?
Perfecto con V-ing
could I have been conferring? could you have been conferring? could she have been conferring? could we have been conferring? could you have been conferring? could they have been conferring?
Forma interro-negativa
Forma simple
could I not confer? could you not confer? could she not confer? could we not confer? could you not confer? could they not confer?
Forma con V-ing
could I not be conferring? could you not be conferring? could she not be conferring? could we not be conferring? could you not be conferring? could they not be conferring?
Perfecto
could I not have conferred? could you not have conferred? could she not have conferred? could we not have conferred? could you not have conferred? could they not have conferred?
Perfecto con V-ing
could I not have been conferring? could you not have been conferring? could she not have been conferring? could we not have been conferring? could you not have been conferring? could they not have been conferring?