I could generate you could generate he could generate we could generate you could generate they could generate
V-ing form
I could be generating you could be generating he could be generating we could be generating you could be generating they could be generating
Perfect
I could have generated you could have generated he could have generated we could have generated you could have generated they could have generated
V-ing perfect
I could have been generating you could have been generating he could have been generating we could have been generating you could have been generating they could have been generating
Negation
Simple form
I could not generate you could not generate he could not generate we could not generate you could not generate they could not generate
V-ing form
I could not be generating you could not be generating he could not be generating we could not be generating you could not be generating they could not be generating
Perfect
I could not have generated you could not have generated he could not have generated we could not have generated you could not have generated they could not have generated
V-ing perfect
I could not have been generating you could not have been generating he could not have been generating we could not have been generating you could not have been generating they could not have been generating
Interrogative form
Simple form
could I generate? could you generate? could he generate? could we generate? could you generate? could they generate?
V-ing form
could I be generating? could you be generating? could he be generating? could we be generating? could you be generating? could they be generating?
Perfect
could I have generated? could you have generated? could he have generated? could we have generated? could you have generated? could they have generated?
V-ing perfect
could I have been generating? could you have been generating? could he have been generating? could we have been generating? could you have been generating? could they have been generating?
Interro-negative form
Simple form
could I not generate? could you not generate? could he not generate? could we not generate? could you not generate? could they not generate?
V-ing form
could I not be generating? could you not be generating? could he not be generating? could we not be generating? could you not be generating? could they not be generating?
Perfect
could I not have generated? could you not have generated? could he not have generated? could we not have generated? could you not have generated? could they not have generated?
V-ing perfect
could I not have been generating? could you not have been generating? could he not have been generating? could we not have been generating? could you not have been generating? could they not have been generating?