I can rank you can rank he can rank we can rank you can rank they can rank
V-ing form
I can be ranking you can be ranking he can be ranking we can be ranking you can be ranking they can be ranking
Perfect
I can have ranked you can have ranked he can have ranked we can have ranked you can have ranked they can have ranked
V-ing perfect
I can have been ranking you can have been ranking he can have been ranking we can have been ranking you can have been ranking they can have been ranking
Negation
Simple form
I cannot rank you cannot rank he cannot rank we cannot rank you cannot rank they cannot rank
V-ing form
I cannot be ranking you cannot be ranking he cannot be ranking we cannot be ranking you cannot be ranking they cannot be ranking
Perfect
I cannot have ranked you cannot have ranked he cannot have ranked we cannot have ranked you cannot have ranked they cannot have ranked
V-ing perfect
I cannot have been ranking you cannot have been ranking he cannot have been ranking we cannot have been ranking you cannot have been ranking they cannot have been ranking
Interrogative form
Simple form
can I rank? can you rank? can he rank? can we rank? can you rank? can they rank?
V-ing form
can I be ranking? can you be ranking? can he be ranking? can we be ranking? can you be ranking? can they be ranking?
Perfect
can I have ranked? can you have ranked? can he have ranked? can we have ranked? can you have ranked? can they have ranked?
V-ing perfect
can I have been ranking? can you have been ranking? can he have been ranking? can we have been ranking? can you have been ranking? can they have been ranking?
Interro-negative form
Simple form
can I not rank? can you not rank? can he not rank? can we not rank? can you not rank? can they not rank?
V-ing form
can I not be ranking? can you not be ranking? can he not be ranking? can we not be ranking? can you not be ranking? can they not be ranking?
Perfect
can I not have ranked? can you not have ranked? can he not have ranked? can we not have ranked? can you not have ranked? can they not have ranked?
V-ing perfect
can I not have been ranking? can you not have been ranking? can he not have been ranking? can we not have been ranking? can you not have been ranking? can they not have been ranking?