I can oppress you can oppress he can oppress we can oppress you can oppress they can oppress
V-ing form
I can be oppressing you can be oppressing he can be oppressing we can be oppressing you can be oppressing they can be oppressing
Perfect
I can have oppressed you can have oppressed he can have oppressed we can have oppressed you can have oppressed they can have oppressed
V-ing perfect
I can have been oppressing you can have been oppressing he can have been oppressing we can have been oppressing you can have been oppressing they can have been oppressing
Negation
Simple form
I cannot oppress you cannot oppress he cannot oppress we cannot oppress you cannot oppress they cannot oppress
V-ing form
I cannot be oppressing you cannot be oppressing he cannot be oppressing we cannot be oppressing you cannot be oppressing they cannot be oppressing
Perfect
I cannot have oppressed you cannot have oppressed he cannot have oppressed we cannot have oppressed you cannot have oppressed they cannot have oppressed
V-ing perfect
I cannot have been oppressing you cannot have been oppressing he cannot have been oppressing we cannot have been oppressing you cannot have been oppressing they cannot have been oppressing
Interrogative form
Simple form
can I oppress? can you oppress? can he oppress? can we oppress? can you oppress? can they oppress?
V-ing form
can I be oppressing? can you be oppressing? can he be oppressing? can we be oppressing? can you be oppressing? can they be oppressing?
Perfect
can I have oppressed? can you have oppressed? can he have oppressed? can we have oppressed? can you have oppressed? can they have oppressed?
V-ing perfect
can I have been oppressing? can you have been oppressing? can he have been oppressing? can we have been oppressing? can you have been oppressing? can they have been oppressing?
Interro-negative form
Simple form
can I not oppress? can you not oppress? can he not oppress? can we not oppress? can you not oppress? can they not oppress?
V-ing form
can I not be oppressing? can you not be oppressing? can he not be oppressing? can we not be oppressing? can you not be oppressing? can they not be oppressing?
Perfect
can I not have oppressed? can you not have oppressed? can he not have oppressed? can we not have oppressed? can you not have oppressed? can they not have oppressed?
V-ing perfect
can I not have been oppressing? can you not have been oppressing? can he not have been oppressing? can we not have been oppressing? can you not have been oppressing? can they not have been oppressing?