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 couldn't confer you couldn't confer she couldn't confer we couldn't confer you couldn't confer they couldn't confer
Forma con V-ing
I couldn't be conferring you couldn't be conferring she couldn't be conferring we couldn't be conferring you couldn't be conferring they couldn't be conferring
Perfecto
I couldn't have conferred you couldn't have conferred she couldn't have conferred we couldn't have conferred you couldn't have conferred they couldn't have conferred
Perfecto con V-ing
I couldn't have been conferring you couldn't have been conferring she couldn't have been conferring we couldn't have been conferring you couldn't have been conferring they couldn't 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
couldn't I confer? couldn't you confer? couldn't she confer? couldn't we confer? couldn't you confer? couldn't they confer?
Forma con V-ing
couldn't I be conferring? couldn't you be conferring? couldn't she be conferring? couldn't we be conferring? couldn't you be conferring? couldn't they be conferring?
Perfecto
couldn't I have conferred? couldn't you have conferred? couldn't she have conferred? couldn't we have conferred? couldn't you have conferred? couldn't they have conferred?
Perfecto con V-ing
couldn't I have been conferring? couldn't you have been conferring? couldn't she have been conferring? couldn't we have been conferring? couldn't you have been conferring? couldn't they have been conferring?