should unload
Regular verb: unload - unloaded- unloaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd unload
you'd unload
he'd unload
we'd unload
you'd unload
they'd unload 	I'd be unloading
you'd be unloading
he'd be unloading
we'd be unloading
you'd be unloading
they'd be unloading	I should've unloaded
you should've unloaded
he should've unloaded
we should've unloaded
you should've unloaded
they should've unloaded	I should've been unloading
you should've been unloading
he should've been unloading
we should've been unloading
you should've been unloading
they should've been unloading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't unload
you shouldn't unload
he shouldn't unload
we shouldn't unload
you shouldn't unload
they shouldn't unload 	I shouldn't be unloading
you shouldn't be unloading
he shouldn't be unloading
we shouldn't be unloading
you shouldn't be unloading
they shouldn't be unloading	I shouldn't have unloaded
you shouldn't have unloaded
he shouldn't have unloaded
we shouldn't have unloaded
you shouldn't have unloaded
they shouldn't have unloaded	I shouldn't have been unloading
you shouldn't have been unloading
he shouldn't have been unloading
we shouldn't have been unloading
you shouldn't have been unloading
they shouldn't have been unloading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I unload?
should you unload?
should he unload?
should we unload?
should you unload?
should they unload? 	should I be unloading?
should you be unloading?
should he be unloading?
should we be unloading?
should you be unloading?
should they be unloading? 	should I have unloaded?
should you have unloaded?
should he have unloaded?
should we have unloaded?
should you have unloaded?
should they have unloaded? 	should I have been unloading?
should you have been unloading?
should he have been unloading?
should we have been unloading?
should you have been unloading?
should they have been unloading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I unload?
shouldn't you unload?
shouldn't he unload?
shouldn't we unload?
shouldn't you unload?
shouldn't they unload? 	shouldn't I be unloading?
shouldn't you be unloading?
shouldn't he be unloading?
shouldn't we be unloading?
shouldn't you be unloading?
shouldn't they be unloading? 	shouldn't I have unloaded?
shouldn't you have unloaded?
shouldn't he have unloaded?
shouldn't we have unloaded?
shouldn't you have unloaded?
shouldn't they have unloaded? 	shouldn't I have been unloading?
shouldn't you have been unloading?
shouldn't he have been unloading?
shouldn't we have been unloading?
shouldn't you have been unloading?
shouldn't they have been unloading?