I can repack you can repack he can repack we can repack you can repack they can repack
V-ing form
I can be repacking you can be repacking he can be repacking we can be repacking you can be repacking they can be repacking
Perfect
I can have repacked you can have repacked he can have repacked we can have repacked you can have repacked they can have repacked
V-ing perfect
I can have been repacking you can have been repacking he can have been repacking we can have been repacking you can have been repacking they can have been repacking
Negation
Simple form
I can't repack you can't repack he can't repack we can't repack you can't repack they can't repack
V-ing form
I can't be repacking you can't be repacking he can't be repacking we can't be repacking you can't be repacking they can't be repacking
Perfect
I can't have repacked you can't have repacked he can't have repacked we can't have repacked you can't have repacked they can't have repacked
V-ing perfect
I can't have been repacking you can't have been repacking he can't have been repacking we can't have been repacking you can't have been repacking they can't have been repacking
Interrogative form
Simple form
can I repack? can you repack? can he repack? can we repack? can you repack? can they repack?
V-ing form
can I be repacking? can you be repacking? can he be repacking? can we be repacking? can you be repacking? can they be repacking?
Perfect
can I have repacked? can you have repacked? can he have repacked? can we have repacked? can you have repacked? can they have repacked?
V-ing perfect
can I have been repacking? can you have been repacking? can he have been repacking? can we have been repacking? can you have been repacking? can they have been repacking?
Interro-negative form
Simple form
can't I repack? can't you repack? can't he repack? can't we repack? can't you repack? can't they repack?
V-ing form
can't I be repacking? can't you be repacking? can't he be repacking? can't we be repacking? can't you be repacking? can't they be repacking?
Perfect
can't I have repacked? can't you have repacked? can't he have repacked? can't we have repacked? can't you have repacked? can't they have repacked?
V-ing perfect
can't I have been repacking? can't you have been repacking? can't he have been repacking? can't we have been repacking? can't you have been repacking? can't they have been repacking?