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