I could consider you could consider he could consider we could consider you could consider they could consider
V-ing form
I could be considering you could be considering he could be considering we could be considering you could be considering they could be considering
Perfect
I could have considered you could have considered he could have considered we could have considered you could have considered they could have considered
V-ing perfect
I could have been considering you could have been considering he could have been considering we could have been considering you could have been considering they could have been considering
Negation
Simple form
I could not consider you could not consider he could not consider we could not consider you could not consider they could not consider
V-ing form
I could not be considering you could not be considering he could not be considering we could not be considering you could not be considering they could not be considering
Perfect
I could not have considered you could not have considered he could not have considered we could not have considered you could not have considered they could not have considered
V-ing perfect
I could not have been considering you could not have been considering he could not have been considering we could not have been considering you could not have been considering they could not have been considering
Interrogative form
Simple form
could I consider? could you consider? could he consider? could we consider? could you consider? could they consider?
V-ing form
could I be considering? could you be considering? could he be considering? could we be considering? could you be considering? could they be considering?
Perfect
could I have considered? could you have considered? could he have considered? could we have considered? could you have considered? could they have considered?
V-ing perfect
could I have been considering? could you have been considering? could he have been considering? could we have been considering? could you have been considering? could they have been considering?
Interro-negative form
Simple form
could I not consider? could you not consider? could he not consider? could we not consider? could you not consider? could they not consider?
V-ing form
could I not be considering? could you not be considering? could he not be considering? could we not be considering? could you not be considering? could they not be considering?
Perfect
could I not have considered? could you not have considered? could he not have considered? could we not have considered? could you not have considered? could they not have considered?
V-ing perfect
could I not have been considering? could you not have been considering? could he not have been considering? could we not have been considering? could you not have been considering? could they not have been considering?