I could emendate you could emendate he could emendate we could emendate you could emendate they could emendate
V-ing form
I could be emendating you could be emendating he could be emendating we could be emendating you could be emendating they could be emendating
Perfect
I could have emendated you could have emendated he could have emendated we could have emendated you could have emendated they could have emendated
V-ing perfect
I could have been emendating you could have been emendating he could have been emendating we could have been emendating you could have been emendating they could have been emendating
Negation
Simple form
I couldn't emendate you couldn't emendate he couldn't emendate we couldn't emendate you couldn't emendate they couldn't emendate
V-ing form
I couldn't be emendating you couldn't be emendating he couldn't be emendating we couldn't be emendating you couldn't be emendating they couldn't be emendating
Perfect
I couldn't have emendated you couldn't have emendated he couldn't have emendated we couldn't have emendated you couldn't have emendated they couldn't have emendated
V-ing perfect
I couldn't have been emendating you couldn't have been emendating he couldn't have been emendating we couldn't have been emendating you couldn't have been emendating they couldn't have been emendating
Interrogative form
Simple form
could I emendate? could you emendate? could he emendate? could we emendate? could you emendate? could they emendate?
V-ing form
could I be emendating? could you be emendating? could he be emendating? could we be emendating? could you be emendating? could they be emendating?
Perfect
could I have emendated? could you have emendated? could he have emendated? could we have emendated? could you have emendated? could they have emendated?
V-ing perfect
could I have been emendating? could you have been emendating? could he have been emendating? could we have been emendating? could you have been emendating? could they have been emendating?
Interro-negative form
Simple form
couldn't I emendate? couldn't you emendate? couldn't he emendate? couldn't we emendate? couldn't you emendate? couldn't they emendate?
V-ing form
couldn't I be emendating? couldn't you be emendating? couldn't he be emendating? couldn't we be emendating? couldn't you be emendating? couldn't they be emendating?
Perfect
couldn't I have emendated? couldn't you have emendated? couldn't he have emendated? couldn't we have emendated? couldn't you have emendated? couldn't they have emendated?
V-ing perfect
couldn't I have been emendating? couldn't you have been emendating? couldn't he have been emendating? couldn't we have been emendating? couldn't you have been emendating? couldn't they have been emendating?