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 couldn't consider you couldn't consider he couldn't consider we couldn't consider you couldn't consider they couldn't consider
V-ing form
I couldn't be considering you couldn't be considering he couldn't be considering we couldn't be considering you couldn't be considering they couldn't be considering
Perfect
I couldn't have considered you couldn't have considered he couldn't have considered we couldn't have considered you couldn't have considered they couldn't have considered
V-ing perfect
I couldn't have been considering you couldn't have been considering he couldn't have been considering we couldn't have been considering you couldn't have been considering they couldn't 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
couldn't I consider? couldn't you consider? couldn't he consider? couldn't we consider? couldn't you consider? couldn't they consider?
V-ing form
couldn't I be considering? couldn't you be considering? couldn't he be considering? couldn't we be considering? couldn't you be considering? couldn't they be considering?
Perfect
couldn't I have considered? couldn't you have considered? couldn't he have considered? couldn't we have considered? couldn't you have considered? couldn't they have considered?
V-ing perfect
couldn't I have been considering? couldn't you have been considering? couldn't he have been considering? couldn't we have been considering? couldn't you have been considering? couldn't they have been considering?