could autograph
Verbo regular: autograph - autographed- autographed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could autograph
you could autograph
she could autograph
we could autograph
you could autograph
they could autograph 	I could be autographing
you could be autographing
she could be autographing
we could be autographing
you could be autographing
they could be autographing	I could have autographed
you could have autographed
she could have autographed
we could have autographed
you could have autographed
they could have autographed	I could have been autographing
you could have been autographing
she could have been autographing
we could have been autographing
you could have been autographing
they could have been autographing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't autograph
you couldn't autograph
she couldn't autograph
we couldn't autograph
you couldn't autograph
they couldn't autograph 	I couldn't be autographing
you couldn't be autographing
she couldn't be autographing
we couldn't be autographing
you couldn't be autographing
they couldn't be autographing	I couldn't have autographed
you couldn't have autographed
she couldn't have autographed
we couldn't have autographed
you couldn't have autographed
they couldn't have autographed	I couldn't have been autographing
you couldn't have been autographing
she couldn't have been autographing
we couldn't have been autographing
you couldn't have been autographing
they couldn't have been autographing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I autograph?
could you autograph?
could she autograph?
could we autograph?
could you autograph?
could they autograph? 	could I be autographing?
could you be autographing?
could she be autographing?
could we be autographing?
could you be autographing?
could they be autographing? 	could I have autographed?
could you have autographed?
could she have autographed?
could we have autographed?
could you have autographed?
could they have autographed? 	could I have been autographing?
could you have been autographing?
could she have been autographing?
could we have been autographing?
could you have been autographing?
could they have been autographing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I autograph?
couldn't you autograph?
couldn't she autograph?
couldn't we autograph?
couldn't you autograph?
couldn't they autograph? 	couldn't I be autographing?
couldn't you be autographing?
couldn't she be autographing?
couldn't we be autographing?
couldn't you be autographing?
couldn't they be autographing? 	couldn't I have autographed?
couldn't you have autographed?
couldn't she have autographed?
couldn't we have autographed?
couldn't you have autographed?
couldn't they have autographed? 	couldn't I have been autographing?
couldn't you have been autographing?
couldn't she have been autographing?
couldn't we have been autographing?
couldn't you have been autographing?
couldn't they have been autographing?