I could fault you could fault she could fault we could fault you could fault they could fault
V-ing form
I could be faulting you could be faulting she could be faulting we could be faulting you could be faulting they could be faulting
Perfect
I could have faulted you could have faulted she could have faulted we could have faulted you could have faulted they could have faulted
V-ing perfect
I could have been faulting you could have been faulting she could have been faulting we could have been faulting you could have been faulting they could have been faulting
Negation
Simple form
I could not fault you could not fault she could not fault we could not fault you could not fault they could not fault
V-ing form
I could not be faulting you could not be faulting she could not be faulting we could not be faulting you could not be faulting they could not be faulting
Perfect
I could not have faulted you could not have faulted she could not have faulted we could not have faulted you could not have faulted they could not have faulted
V-ing perfect
I could not have been faulting you could not have been faulting she could not have been faulting we could not have been faulting you could not have been faulting they could not have been faulting
Interrogative form
Simple form
could I fault? could you fault? could she fault? could we fault? could you fault? could they fault?
V-ing form
could I be faulting? could you be faulting? could she be faulting? could we be faulting? could you be faulting? could they be faulting?
Perfect
could I have faulted? could you have faulted? could she have faulted? could we have faulted? could you have faulted? could they have faulted?
V-ing perfect
could I have been faulting? could you have been faulting? could she have been faulting? could we have been faulting? could you have been faulting? could they have been faulting?
Interro-negative form
Simple form
could I not fault? could you not fault? could she not fault? could we not fault? could you not fault? could they not fault?
V-ing form
could I not be faulting? could you not be faulting? could she not be faulting? could we not be faulting? could you not be faulting? could they not be faulting?
Perfect
could I not have faulted? could you not have faulted? could she not have faulted? could we not have faulted? could you not have faulted? could they not have faulted?
V-ing perfect
could I not have been faulting? could you not have been faulting? could she not have been faulting? could we not have been faulting? could you not have been faulting? could they not have been faulting?