English verb conjugation
COULD UNLOAD

Regular verb: unload - unloaded - unloaded

Affirmation

Simple form	V-ing form
I could unload you could unload she could unload we could unload you could unload they could unload	I could be unloading you could be unloading she could be unloading we could be unloading you could be unloading they could be unloading
Perfect	V-ing perfect
I could have unloaded you could have unloaded she could have unloaded we could have unloaded you could have unloaded they could have unloaded	I could have been unloading you could have been unloading she could have been unloading we could have been unloading you could have been unloading they could have been unloading

Negation

Simple form	V-ing form
I could not unload you could not unload she could not unload we could not unload you could not unload they could not unload	I could not be unloading you could not be unloading she could not be unloading we could not be unloading you could not be unloading they could not be unloading
Perfect	V-ing perfect
I could not have unloaded you could not have unloaded she could not have unloaded we could not have unloaded you could not have unloaded they could not have unloaded	I could not have been unloading you could not have been unloading she could not have been unloading we could not have been unloading you could not have been unloading they could not have been unloading

Interrogative form

Simple form	V-ing form
could I unload? could you unload? could she unload? could we unload? could you unload? could they unload?	could I be unloading? could you be unloading? could she be unloading? could we be unloading? could you be unloading? could they be unloading?
Perfect	V-ing perfect
could I have unloaded? could you have unloaded? could she have unloaded? could we have unloaded? could you have unloaded? could they have unloaded?	could I have been unloading? could you have been unloading? could she have been unloading? could we have been unloading? could you have been unloading? could they have been unloading?

Interro-negative form

Simple form	V-ing form
could I not unload? could you not unload? could she not unload? could we not unload? could you not unload? could they not unload?	could I not be unloading? could you not be unloading? could she not be unloading? could we not be unloading? could you not be unloading? could they not be unloading?
Perfect	V-ing perfect
could I not have unloaded? could you not have unloaded? could she not have unloaded? could we not have unloaded? could you not have unloaded? could they not have unloaded?	could I not have been unloading? could you not have been unloading? could she not have been unloading? could we not have been unloading? could you not have been unloading? could they not have been unloading?