could render
Regular verb: render - rendered- rendered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could render
you could render
she could render
we could render
you could render
they could render 	I could be rendering
you could be rendering
she could be rendering
we could be rendering
you could be rendering
they could be rendering	I could have rendered
you could have rendered
she could have rendered
we could have rendered
you could have rendered
they could have rendered	I could have been rendering
you could have been rendering
she could have been rendering
we could have been rendering
you could have been rendering
they could have been rendering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't render
you couldn't render
she couldn't render
we couldn't render
you couldn't render
they couldn't render 	I couldn't be rendering
you couldn't be rendering
she couldn't be rendering
we couldn't be rendering
you couldn't be rendering
they couldn't be rendering	I couldn't have rendered
you couldn't have rendered
she couldn't have rendered
we couldn't have rendered
you couldn't have rendered
they couldn't have rendered	I couldn't have been rendering
you couldn't have been rendering
she couldn't have been rendering
we couldn't have been rendering
you couldn't have been rendering
they couldn't have been rendering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I render?
could you render?
could she render?
could we render?
could you render?
could they render? 	could I be rendering?
could you be rendering?
could she be rendering?
could we be rendering?
could you be rendering?
could they be rendering? 	could I have rendered?
could you have rendered?
could she have rendered?
could we have rendered?
could you have rendered?
could they have rendered? 	could I have been rendering?
could you have been rendering?
could she have been rendering?
could we have been rendering?
could you have been rendering?
could they have been rendering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I render?
couldn't you render?
couldn't she render?
couldn't we render?
couldn't you render?
couldn't they render? 	couldn't I be rendering?
couldn't you be rendering?
couldn't she be rendering?
couldn't we be rendering?
couldn't you be rendering?
couldn't they be rendering? 	couldn't I have rendered?
couldn't you have rendered?
couldn't she have rendered?
couldn't we have rendered?
couldn't you have rendered?
couldn't they have rendered? 	couldn't I have been rendering?
couldn't you have been rendering?
couldn't she have been rendering?
couldn't we have been rendering?
couldn't you have been rendering?
couldn't they have been rendering?