I can supersede you can supersede she can supersede we can supersede you can supersede they can supersede
V-ing form
I can be superseding you can be superseding she can be superseding we can be superseding you can be superseding they can be superseding
Perfect
I can have superseded you can have superseded she can have superseded we can have superseded you can have superseded they can have superseded
V-ing perfect
I can have been superseding you can have been superseding she can have been superseding we can have been superseding you can have been superseding they can have been superseding
Negation
Simple form
I cannot supersede you cannot supersede she cannot supersede we cannot supersede you cannot supersede they cannot supersede
V-ing form
I cannot be superseding you cannot be superseding she cannot be superseding we cannot be superseding you cannot be superseding they cannot be superseding
Perfect
I cannot have superseded you cannot have superseded she cannot have superseded we cannot have superseded you cannot have superseded they cannot have superseded
V-ing perfect
I cannot have been superseding you cannot have been superseding she cannot have been superseding we cannot have been superseding you cannot have been superseding they cannot have been superseding
Interrogative form
Simple form
can I supersede? can you supersede? can she supersede? can we supersede? can you supersede? can they supersede?
V-ing form
can I be superseding? can you be superseding? can she be superseding? can we be superseding? can you be superseding? can they be superseding?
Perfect
can I have superseded? can you have superseded? can she have superseded? can we have superseded? can you have superseded? can they have superseded?
V-ing perfect
can I have been superseding? can you have been superseding? can she have been superseding? can we have been superseding? can you have been superseding? can they have been superseding?
Interro-negative form
Simple form
can I not supersede? can you not supersede? can she not supersede? can we not supersede? can you not supersede? can they not supersede?
V-ing form
can I not be superseding? can you not be superseding? can she not be superseding? can we not be superseding? can you not be superseding? can they not be superseding?
Perfect
can I not have superseded? can you not have superseded? can she not have superseded? can we not have superseded? can you not have superseded? can they not have superseded?
V-ing perfect
can I not have been superseding? can you not have been superseding? can she not have been superseding? can we not have been superseding? can you not have been superseding? can they not have been superseding?