I could reface you could reface he could reface we could reface you could reface they could reface
V-ing form
I could be refacing you could be refacing he could be refacing we could be refacing you could be refacing they could be refacing
Perfect
I could have refaced you could have refaced he could have refaced we could have refaced you could have refaced they could have refaced
V-ing perfect
I could have been refacing you could have been refacing he could have been refacing we could have been refacing you could have been refacing they could have been refacing
Negation
Simple form
I could not reface you could not reface he could not reface we could not reface you could not reface they could not reface
V-ing form
I could not be refacing you could not be refacing he could not be refacing we could not be refacing you could not be refacing they could not be refacing
Perfect
I could not have refaced you could not have refaced he could not have refaced we could not have refaced you could not have refaced they could not have refaced
V-ing perfect
I could not have been refacing you could not have been refacing he could not have been refacing we could not have been refacing you could not have been refacing they could not have been refacing
Interrogative form
Simple form
could I reface? could you reface? could he reface? could we reface? could you reface? could they reface?
V-ing form
could I be refacing? could you be refacing? could he be refacing? could we be refacing? could you be refacing? could they be refacing?
Perfect
could I have refaced? could you have refaced? could he have refaced? could we have refaced? could you have refaced? could they have refaced?
V-ing perfect
could I have been refacing? could you have been refacing? could he have been refacing? could we have been refacing? could you have been refacing? could they have been refacing?
Interro-negative form
Simple form
could I not reface? could you not reface? could he not reface? could we not reface? could you not reface? could they not reface?
V-ing form
could I not be refacing? could you not be refacing? could he not be refacing? could we not be refacing? could you not be refacing? could they not be refacing?
Perfect
could I not have refaced? could you not have refaced? could he not have refaced? could we not have refaced? could you not have refaced? could they not have refaced?
V-ing perfect
could I not have been refacing? could you not have been refacing? could he not have been refacing? could we not have been refacing? could you not have been refacing? could they not have been refacing?