I could cold-pack you could cold-pack he could cold-pack we could cold-pack you could cold-pack they could cold-pack
V-ing form
I could be cold-packing you could be cold-packing he could be cold-packing we could be cold-packing you could be cold-packing they could be cold-packing
Perfect
I could have cold-packed you could have cold-packed he could have cold-packed we could have cold-packed you could have cold-packed they could have cold-packed
V-ing perfect
I could have been cold-packing you could have been cold-packing he could have been cold-packing we could have been cold-packing you could have been cold-packing they could have been cold-packing
Negation
Simple form
I couldn't cold-pack you couldn't cold-pack he couldn't cold-pack we couldn't cold-pack you couldn't cold-pack they couldn't cold-pack
V-ing form
I couldn't be cold-packing you couldn't be cold-packing he couldn't be cold-packing we couldn't be cold-packing you couldn't be cold-packing they couldn't be cold-packing
Perfect
I couldn't have cold-packed you couldn't have cold-packed he couldn't have cold-packed we couldn't have cold-packed you couldn't have cold-packed they couldn't have cold-packed
V-ing perfect
I couldn't have been cold-packing you couldn't have been cold-packing he couldn't have been cold-packing we couldn't have been cold-packing you couldn't have been cold-packing they couldn't have been cold-packing
Interrogative form
Simple form
could I cold-pack? could you cold-pack? could he cold-pack? could we cold-pack? could you cold-pack? could they cold-pack?
V-ing form
could I be cold-packing? could you be cold-packing? could he be cold-packing? could we be cold-packing? could you be cold-packing? could they be cold-packing?
Perfect
could I have cold-packed? could you have cold-packed? could he have cold-packed? could we have cold-packed? could you have cold-packed? could they have cold-packed?
V-ing perfect
could I have been cold-packing? could you have been cold-packing? could he have been cold-packing? could we have been cold-packing? could you have been cold-packing? could they have been cold-packing?
Interro-negative form
Simple form
couldn't I cold-pack? couldn't you cold-pack? couldn't he cold-pack? couldn't we cold-pack? couldn't you cold-pack? couldn't they cold-pack?
V-ing form
couldn't I be cold-packing? couldn't you be cold-packing? couldn't he be cold-packing? couldn't we be cold-packing? couldn't you be cold-packing? couldn't they be cold-packing?
Perfect
couldn't I have cold-packed? couldn't you have cold-packed? couldn't he have cold-packed? couldn't we have cold-packed? couldn't you have cold-packed? couldn't they have cold-packed?
V-ing perfect
couldn't I have been cold-packing? couldn't you have been cold-packing? couldn't he have been cold-packing? couldn't we have been cold-packing? couldn't you have been cold-packing? couldn't they have been cold-packing?