I could floorboard you could floorboard she could floorboard we could floorboard you could floorboard they could floorboard
V-ing form
I could be floorboarding you could be floorboarding she could be floorboarding we could be floorboarding you could be floorboarding they could be floorboarding
Perfect
I could have floorboarded you could have floorboarded she 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 she could have been floorboarding we could have been floorboarding you could have been floorboarding they could have been floorboarding
Negation
Simple form
I couldn't floorboard you couldn't floorboard she couldn't floorboard we couldn't floorboard you couldn't floorboard they couldn't floorboard
V-ing form
I couldn't be floorboarding you couldn't be floorboarding she couldn't be floorboarding we couldn't be floorboarding you couldn't be floorboarding they couldn't be floorboarding
Perfect
I couldn't have floorboarded you couldn't have floorboarded she couldn't have floorboarded we couldn't have floorboarded you couldn't have floorboarded they couldn't have floorboarded
V-ing perfect
I couldn't have been floorboarding you couldn't have been floorboarding she couldn't have been floorboarding we couldn't have been floorboarding you couldn't have been floorboarding they couldn't have been floorboarding
Interrogative form
Simple form
could I floorboard? could you floorboard? could she floorboard? could we floorboard? could you floorboard? could they floorboard?
V-ing form
could I be floorboarding? could you be floorboarding? could she be floorboarding? could we be floorboarding? could you be floorboarding? could they be floorboarding?
Perfect
could I have floorboarded? could you have floorboarded? could she 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 she have been floorboarding? could we have been floorboarding? could you have been floorboarding? could they have been floorboarding?
Interro-negative form
Simple form
couldn't I floorboard? couldn't you floorboard? couldn't she floorboard? couldn't we floorboard? couldn't you floorboard? couldn't they floorboard?
V-ing form
couldn't I be floorboarding? couldn't you be floorboarding? couldn't she be floorboarding? couldn't we be floorboarding? couldn't you be floorboarding? couldn't they be floorboarding?
Perfect
couldn't I have floorboarded? couldn't you have floorboarded? couldn't she have floorboarded? couldn't we have floorboarded? couldn't you have floorboarded? couldn't they have floorboarded?
V-ing perfect
couldn't I have been floorboarding? couldn't you have been floorboarding? couldn't she have been floorboarding? couldn't we have been floorboarding? couldn't you have been floorboarding? couldn't they have been floorboarding?