I could repack you could repack she could repack we could repack you could repack they could repack
V-ing form
I could be repacking you could be repacking she could be repacking we could be repacking you could be repacking they could be repacking
Perfect
I could have repacked you could have repacked she 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 she 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 she 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 she 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 she 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 she 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 she repack? could we repack? could you repack? could they repack?
V-ing form
could I be repacking? could you be repacking? could she be repacking? could we be repacking? could you be repacking? could they be repacking?
Perfect
could I have repacked? could you have repacked? could she 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 she 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 she 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 she 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 she 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 she have been repacking? couldn't we have been repacking? couldn't you have been repacking? couldn't they have been repacking?