I could bale you could bale he could bale we could bale you could bale they could bale
V-ing form
I could be baling you could be baling he could be baling we could be baling you could be baling they could be baling
Perfect
I could have baled you could have baled he could have baled we could have baled you could have baled they could have baled
V-ing perfect
I could have been baling you could have been baling he could have been baling we could have been baling you could have been baling they could have been baling
Negation
Simple form
I couldn't bale you couldn't bale he couldn't bale we couldn't bale you couldn't bale they couldn't bale
V-ing form
I couldn't be baling you couldn't be baling he couldn't be baling we couldn't be baling you couldn't be baling they couldn't be baling
Perfect
I couldn't have baled you couldn't have baled he couldn't have baled we couldn't have baled you couldn't have baled they couldn't have baled
V-ing perfect
I couldn't have been baling you couldn't have been baling he couldn't have been baling we couldn't have been baling you couldn't have been baling they couldn't have been baling
Interrogative form
Simple form
could I bale? could you bale? could he bale? could we bale? could you bale? could they bale?
V-ing form
could I be baling? could you be baling? could he be baling? could we be baling? could you be baling? could they be baling?
Perfect
could I have baled? could you have baled? could he have baled? could we have baled? could you have baled? could they have baled?
V-ing perfect
could I have been baling? could you have been baling? could he have been baling? could we have been baling? could you have been baling? could they have been baling?
Interro-negative form
Simple form
couldn't I bale? couldn't you bale? couldn't he bale? couldn't we bale? couldn't you bale? couldn't they bale?
V-ing form
couldn't I be baling? couldn't you be baling? couldn't he be baling? couldn't we be baling? couldn't you be baling? couldn't they be baling?
Perfect
couldn't I have baled? couldn't you have baled? couldn't he have baled? couldn't we have baled? couldn't you have baled? couldn't they have baled?
V-ing perfect
couldn't I have been baling? couldn't you have been baling? couldn't he have been baling? couldn't we have been baling? couldn't you have been baling? couldn't they have been baling?