could confer
Verbo regular: confer - conferred- conferred

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