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 couldn't reface you couldn't reface he couldn't reface we couldn't reface you couldn't reface they couldn't reface
V-ing form
I couldn't be refacing you couldn't be refacing he couldn't be refacing we couldn't be refacing you couldn't be refacing they couldn't be refacing
Perfect
I couldn't have refaced you couldn't have refaced he couldn't have refaced we couldn't have refaced you couldn't have refaced they couldn't have refaced
V-ing perfect
I couldn't have been refacing you couldn't have been refacing he couldn't have been refacing we couldn't have been refacing you couldn't have been refacing they couldn't 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
couldn't I reface? couldn't you reface? couldn't he reface? couldn't we reface? couldn't you reface? couldn't they reface?
V-ing form
couldn't I be refacing? couldn't you be refacing? couldn't he be refacing? couldn't we be refacing? couldn't you be refacing? couldn't they be refacing?
Perfect
couldn't I have refaced? couldn't you have refaced? couldn't he have refaced? couldn't we have refaced? couldn't you have refaced? couldn't they have refaced?
V-ing perfect
couldn't I have been refacing? couldn't you have been refacing? couldn't he have been refacing? couldn't we have been refacing? couldn't you have been refacing? couldn't they have been refacing?