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