I can proceed you can proceed he can proceed we can proceed you can proceed they can proceed
V-ing form
I can be proceeding you can be proceeding he can be proceeding we can be proceeding you can be proceeding they can be proceeding
Perfect
I can have proceeded you can have proceeded he can have proceeded we can have proceeded you can have proceeded they can have proceeded
V-ing perfect
I can have been proceeding you can have been proceeding he can have been proceeding we can have been proceeding you can have been proceeding they can have been proceeding
Negation
Simple form
I cannot proceed you cannot proceed he cannot proceed we cannot proceed you cannot proceed they cannot proceed
V-ing form
I cannot be proceeding you cannot be proceeding he cannot be proceeding we cannot be proceeding you cannot be proceeding they cannot be proceeding
Perfect
I cannot have proceeded you cannot have proceeded he cannot have proceeded we cannot have proceeded you cannot have proceeded they cannot have proceeded
V-ing perfect
I cannot have been proceeding you cannot have been proceeding he cannot have been proceeding we cannot have been proceeding you cannot have been proceeding they cannot have been proceeding
Interrogative form
Simple form
can I proceed? can you proceed? can he proceed? can we proceed? can you proceed? can they proceed?
V-ing form
can I be proceeding? can you be proceeding? can he be proceeding? can we be proceeding? can you be proceeding? can they be proceeding?
Perfect
can I have proceeded? can you have proceeded? can he have proceeded? can we have proceeded? can you have proceeded? can they have proceeded?
V-ing perfect
can I have been proceeding? can you have been proceeding? can he have been proceeding? can we have been proceeding? can you have been proceeding? can they have been proceeding?
Interro-negative form
Simple form
can I not proceed? can you not proceed? can he not proceed? can we not proceed? can you not proceed? can they not proceed?
V-ing form
can I not be proceeding? can you not be proceeding? can he not be proceeding? can we not be proceeding? can you not be proceeding? can they not be proceeding?
Perfect
can I not have proceeded? can you not have proceeded? can he not have proceeded? can we not have proceeded? can you not have proceeded? can they not have proceeded?
V-ing perfect
can I not have been proceeding? can you not have been proceeding? can he not have been proceeding? can we not have been proceeding? can you not have been proceeding? can they not have been proceeding?