could astound
Regular verb: astound - astounded- astounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could astound
you could astound
she could astound
we could astound
you could astound
they could astound 	I could be astounding
you could be astounding
she could be astounding
we could be astounding
you could be astounding
they could be astounding	I could have astounded
you could have astounded
she could have astounded
we could have astounded
you could have astounded
they could have astounded	I could have been astounding
you could have been astounding
she could have been astounding
we could have been astounding
you could have been astounding
they could have been astounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't astound
you couldn't astound
she couldn't astound
we couldn't astound
you couldn't astound
they couldn't astound 	I couldn't be astounding
you couldn't be astounding
she couldn't be astounding
we couldn't be astounding
you couldn't be astounding
they couldn't be astounding	I couldn't have astounded
you couldn't have astounded
she couldn't have astounded
we couldn't have astounded
you couldn't have astounded
they couldn't have astounded	I couldn't have been astounding
you couldn't have been astounding
she couldn't have been astounding
we couldn't have been astounding
you couldn't have been astounding
they couldn't have been astounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I astound?
could you astound?
could she astound?
could we astound?
could you astound?
could they astound? 	could I be astounding?
could you be astounding?
could she be astounding?
could we be astounding?
could you be astounding?
could they be astounding? 	could I have astounded?
could you have astounded?
could she have astounded?
could we have astounded?
could you have astounded?
could they have astounded? 	could I have been astounding?
could you have been astounding?
could she have been astounding?
could we have been astounding?
could you have been astounding?
could they have been astounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I astound?
couldn't you astound?
couldn't she astound?
couldn't we astound?
couldn't you astound?
couldn't they astound? 	couldn't I be astounding?
couldn't you be astounding?
couldn't she be astounding?
couldn't we be astounding?
couldn't you be astounding?
couldn't they be astounding? 	couldn't I have astounded?
couldn't you have astounded?
couldn't she have astounded?
couldn't we have astounded?
couldn't you have astounded?
couldn't they have astounded? 	couldn't I have been astounding?
couldn't you have been astounding?
couldn't she have been astounding?
couldn't we have been astounding?
couldn't you have been astounding?
couldn't they have been astounding?