could surprise
Verbo regular: surprise - surprised- surprised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could surprise
you could surprise
he could surprise
we could surprise
you could surprise
they could surprise 	I could be surprising
you could be surprising
he could be surprising
we could be surprising
you could be surprising
they could be surprising	I could have surprised
you could have surprised
he could have surprised
we could have surprised
you could have surprised
they could have surprised	I could have been surprising
you could have been surprising
he could have been surprising
we could have been surprising
you could have been surprising
they could have been surprising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't surprise
you couldn't surprise
he couldn't surprise
we couldn't surprise
you couldn't surprise
they couldn't surprise 	I couldn't be surprising
you couldn't be surprising
he couldn't be surprising
we couldn't be surprising
you couldn't be surprising
they couldn't be surprising	I couldn't have surprised
you couldn't have surprised
he couldn't have surprised
we couldn't have surprised
you couldn't have surprised
they couldn't have surprised	I couldn't have been surprising
you couldn't have been surprising
he couldn't have been surprising
we couldn't have been surprising
you couldn't have been surprising
they couldn't have been surprising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I surprise?
could you surprise?
could he surprise?
could we surprise?
could you surprise?
could they surprise? 	could I be surprising?
could you be surprising?
could he be surprising?
could we be surprising?
could you be surprising?
could they be surprising? 	could I have surprised?
could you have surprised?
could he have surprised?
could we have surprised?
could you have surprised?
could they have surprised? 	could I have been surprising?
could you have been surprising?
could he have been surprising?
could we have been surprising?
could you have been surprising?
could they have been surprising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I surprise?
couldn't you surprise?
couldn't he surprise?
couldn't we surprise?
couldn't you surprise?
couldn't they surprise? 	couldn't I be surprising?
couldn't you be surprising?
couldn't he be surprising?
couldn't we be surprising?
couldn't you be surprising?
couldn't they be surprising? 	couldn't I have surprised?
couldn't you have surprised?
couldn't he have surprised?
couldn't we have surprised?
couldn't you have surprised?
couldn't they have surprised? 	couldn't I have been surprising?
couldn't you have been surprising?
couldn't he have been surprising?
couldn't we have been surprising?
couldn't you have been surprising?
couldn't they have been surprising?