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