I could floorboard you could floorboard he could floorboard we could floorboard you could floorboard they could floorboard
V-ing form
I could be floorboarding you could be floorboarding he could be floorboarding we could be floorboarding you could be floorboarding they could be floorboarding
Perfect
I could have floorboarded you could have floorboarded he could have floorboarded we could have floorboarded you could have floorboarded they could have floorboarded
V-ing perfect
I could have been floorboarding you could have been floorboarding he could have been floorboarding we could have been floorboarding you could have been floorboarding they could have been floorboarding
Negation
Simple form
I could not floorboard you could not floorboard he could not floorboard we could not floorboard you could not floorboard they could not floorboard
V-ing form
I could not be floorboarding you could not be floorboarding he could not be floorboarding we could not be floorboarding you could not be floorboarding they could not be floorboarding
Perfect
I could not have floorboarded you could not have floorboarded he could not have floorboarded we could not have floorboarded you could not have floorboarded they could not have floorboarded
V-ing perfect
I could not have been floorboarding you could not have been floorboarding he could not have been floorboarding we could not have been floorboarding you could not have been floorboarding they could not have been floorboarding
Interrogative form
Simple form
could I floorboard? could you floorboard? could he floorboard? could we floorboard? could you floorboard? could they floorboard?
V-ing form
could I be floorboarding? could you be floorboarding? could he be floorboarding? could we be floorboarding? could you be floorboarding? could they be floorboarding?
Perfect
could I have floorboarded? could you have floorboarded? could he have floorboarded? could we have floorboarded? could you have floorboarded? could they have floorboarded?
V-ing perfect
could I have been floorboarding? could you have been floorboarding? could he have been floorboarding? could we have been floorboarding? could you have been floorboarding? could they have been floorboarding?
Interro-negative form
Simple form
could I not floorboard? could you not floorboard? could he not floorboard? could we not floorboard? could you not floorboard? could they not floorboard?
V-ing form
could I not be floorboarding? could you not be floorboarding? could he not be floorboarding? could we not be floorboarding? could you not be floorboarding? could they not be floorboarding?
Perfect
could I not have floorboarded? could you not have floorboarded? could he not have floorboarded? could we not have floorboarded? could you not have floorboarded? could they not have floorboarded?
V-ing perfect
could I not have been floorboarding? could you not have been floorboarding? could he not have been floorboarding? could we not have been floorboarding? could you not have been floorboarding? could they not have been floorboarding?