I could faint you could faint she could faint we could faint you could faint they could faint
V-ing form
I could be fainting you could be fainting she could be fainting we could be fainting you could be fainting they could be fainting
Perfect
I could have fainted you could have fainted she could have fainted we could have fainted you could have fainted they could have fainted
V-ing perfect
I could have been fainting you could have been fainting she could have been fainting we could have been fainting you could have been fainting they could have been fainting
Negation
Simple form
I could not faint you could not faint she could not faint we could not faint you could not faint they could not faint
V-ing form
I could not be fainting you could not be fainting she could not be fainting we could not be fainting you could not be fainting they could not be fainting
Perfect
I could not have fainted you could not have fainted she could not have fainted we could not have fainted you could not have fainted they could not have fainted
V-ing perfect
I could not have been fainting you could not have been fainting she could not have been fainting we could not have been fainting you could not have been fainting they could not have been fainting
Interrogative form
Simple form
could I faint? could you faint? could she faint? could we faint? could you faint? could they faint?
V-ing form
could I be fainting? could you be fainting? could she be fainting? could we be fainting? could you be fainting? could they be fainting?
Perfect
could I have fainted? could you have fainted? could she have fainted? could we have fainted? could you have fainted? could they have fainted?
V-ing perfect
could I have been fainting? could you have been fainting? could she have been fainting? could we have been fainting? could you have been fainting? could they have been fainting?
Interro-negative form
Simple form
could I not faint? could you not faint? could she not faint? could we not faint? could you not faint? could they not faint?
V-ing form
could I not be fainting? could you not be fainting? could she not be fainting? could we not be fainting? could you not be fainting? could they not be fainting?
Perfect
could I not have fainted? could you not have fainted? could she not have fainted? could we not have fainted? could you not have fainted? could they not have fainted?
V-ing perfect
could I not have been fainting? could you not have been fainting? could she not have been fainting? could we not have been fainting? could you not have been fainting? could they not have been fainting?