can unload
Regular verb: unload - unloaded- unloaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can unload
you can unload
he can unload
we can unload
you can unload
they can unload 	I can be unloading
you can be unloading
he can be unloading
we can be unloading
you can be unloading
they can be unloading	I can have unloaded
you can have unloaded
he can have unloaded
we can have unloaded
you can have unloaded
they can have unloaded	I can have been unloading
you can have been unloading
he can have been unloading
we can have been unloading
you can have been unloading
they can have been unloading	

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

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

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