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