I could ghostwrite you could ghostwrite he could ghostwrite we could ghostwrite you could ghostwrite they could ghostwrite
V-ing form
I could be ghostwriting you could be ghostwriting he could be ghostwriting we could be ghostwriting you could be ghostwriting they could be ghostwriting
Perfect
I could have ghostwrited you could have ghostwrited he could have ghostwrited we could have ghostwrited you could have ghostwrited they could have ghostwrited
V-ing perfect
I could have been ghostwriting you could have been ghostwriting he could have been ghostwriting we could have been ghostwriting you could have been ghostwriting they could have been ghostwriting
Negation
Simple form
I could not ghostwrite you could not ghostwrite he could not ghostwrite we could not ghostwrite you could not ghostwrite they could not ghostwrite
V-ing form
I could not be ghostwriting you could not be ghostwriting he could not be ghostwriting we could not be ghostwriting you could not be ghostwriting they could not be ghostwriting
Perfect
I could not have ghostwrited you could not have ghostwrited he could not have ghostwrited we could not have ghostwrited you could not have ghostwrited they could not have ghostwrited
V-ing perfect
I could not have been ghostwriting you could not have been ghostwriting he could not have been ghostwriting we could not have been ghostwriting you could not have been ghostwriting they could not have been ghostwriting
Interrogative form
Simple form
could I ghostwrite? could you ghostwrite? could he ghostwrite? could we ghostwrite? could you ghostwrite? could they ghostwrite?
V-ing form
could I be ghostwriting? could you be ghostwriting? could he be ghostwriting? could we be ghostwriting? could you be ghostwriting? could they be ghostwriting?
Perfect
could I have ghostwrited? could you have ghostwrited? could he have ghostwrited? could we have ghostwrited? could you have ghostwrited? could they have ghostwrited?
V-ing perfect
could I have been ghostwriting? could you have been ghostwriting? could he have been ghostwriting? could we have been ghostwriting? could you have been ghostwriting? could they have been ghostwriting?
Interro-negative form
Simple form
could I not ghostwrite? could you not ghostwrite? could he not ghostwrite? could we not ghostwrite? could you not ghostwrite? could they not ghostwrite?
V-ing form
could I not be ghostwriting? could you not be ghostwriting? could he not be ghostwriting? could we not be ghostwriting? could you not be ghostwriting? could they not be ghostwriting?
Perfect
could I not have ghostwrited? could you not have ghostwrited? could he not have ghostwrited? could we not have ghostwrited? could you not have ghostwrited? could they not have ghostwrited?
V-ing perfect
could I not have been ghostwriting? could you not have been ghostwriting? could he not have been ghostwriting? could we not have been ghostwriting? could you not have been ghostwriting? could they not have been ghostwriting?