English verb conjugation
CAN RANK

Regular verb: rank - ranked - ranked

Affirmation

Simple form	V-ing form
I can rank you can rank he can rank we can rank you can rank they can rank	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	V-ing 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	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	V-ing form
I can't rank you can't rank he can't rank we can't rank you can't rank they can't rank	I can't be ranking you can't be ranking he can't be ranking we can't be ranking you can't be ranking they can't be ranking
Perfect	V-ing perfect
I can't have ranked you can't have ranked he can't have ranked we can't have ranked you can't have ranked they can't have ranked	I can't have been ranking you can't have been ranking he can't have been ranking we can't have been ranking you can't have been ranking they can't have been ranking

Interrogative form

Simple form	V-ing form
can I rank? can you rank? can he rank? can we rank? can you rank? can they rank?	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	V-ing 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?	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	V-ing form
can't I rank? can't you rank? can't he rank? can't we rank? can't you rank? can't they rank?	can't I be ranking? can't you be ranking? can't he be ranking? can't we be ranking? can't you be ranking? can't they be ranking?
Perfect	V-ing perfect
can't I have ranked? can't you have ranked? can't he have ranked? can't we have ranked? can't you have ranked? can't they have ranked?	can't I have been ranking? can't you have been ranking? can't he have been ranking? can't we have been ranking? can't you have been ranking? can't they have been ranking?