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