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