I can saber you can saber he can saber we can saber you can saber they can saber
V-ing form
I can be sabering you can be sabering he can be sabering we can be sabering you can be sabering they can be sabering
Perfect
I can have sabered you can have sabered he can have sabered we can have sabered you can have sabered they can have sabered
V-ing perfect
I can have been sabering you can have been sabering he can have been sabering we can have been sabering you can have been sabering they can have been sabering
Negation
Simple form
I cannot saber you cannot saber he cannot saber we cannot saber you cannot saber they cannot saber
V-ing form
I cannot be sabering you cannot be sabering he cannot be sabering we cannot be sabering you cannot be sabering they cannot be sabering
Perfect
I cannot have sabered you cannot have sabered he cannot have sabered we cannot have sabered you cannot have sabered they cannot have sabered
V-ing perfect
I cannot have been sabering you cannot have been sabering he cannot have been sabering we cannot have been sabering you cannot have been sabering they cannot have been sabering
Interrogative form
Simple form
can I saber? can you saber? can he saber? can we saber? can you saber? can they saber?
V-ing form
can I be sabering? can you be sabering? can he be sabering? can we be sabering? can you be sabering? can they be sabering?
Perfect
can I have sabered? can you have sabered? can he have sabered? can we have sabered? can you have sabered? can they have sabered?
V-ing perfect
can I have been sabering? can you have been sabering? can he have been sabering? can we have been sabering? can you have been sabering? can they have been sabering?
Interro-negative form
Simple form
can I not saber? can you not saber? can he not saber? can we not saber? can you not saber? can they not saber?
V-ing form
can I not be sabering? can you not be sabering? can he not be sabering? can we not be sabering? can you not be sabering? can they not be sabering?
Perfect
can I not have sabered? can you not have sabered? can he not have sabered? can we not have sabered? can you not have sabered? can they not have sabered?
V-ing perfect
can I not have been sabering? can you not have been sabering? can he not have been sabering? can we not have been sabering? can you not have been sabering? can they not have been sabering?