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