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