could surprise
Regular verb: surprise - surprised- surprised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could surprise
you could surprise
she could surprise
we could surprise
you could surprise
they could surprise 	I could be surprising
you could be surprising
she could be surprising
we could be surprising
you could be surprising
they could be surprising	I could have surprised
you could have surprised
she 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
she could have been surprising
we could have been surprising
you could have been surprising
they could have been surprising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't surprise
you couldn't surprise
she 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
she 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
she 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
she couldn't have been surprising
we couldn't have been surprising
you couldn't have been surprising
they couldn't have been surprising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I surprise?
could you surprise?
could she surprise?
could we surprise?
could you surprise?
could they surprise? 	could I be surprising?
could you be surprising?
could she be surprising?
could we be surprising?
could you be surprising?
could they be surprising? 	could I have surprised?
could you have surprised?
could she 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 she have been surprising?
could we have been surprising?
could you have been surprising?
could they have been surprising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I surprise?
couldn't you surprise?
couldn't she 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 she 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 she 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 she have been surprising?
couldn't we have been surprising?
couldn't you have been surprising?
couldn't they have been surprising?