could upload
Regular verb: upload - uploaded- uploaded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could upload
you could upload
he could upload
we could upload
you could upload
they could upload 	I could be uploading
you could be uploading
he could be uploading
we could be uploading
you could be uploading
they could be uploading	I could have uploaded
you could have uploaded
he could have uploaded
we could have uploaded
you could have uploaded
they could have uploaded	I could have been uploading
you could have been uploading
he could have been uploading
we could have been uploading
you could have been uploading
they could have been uploading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't upload
you couldn't upload
he couldn't upload
we couldn't upload
you couldn't upload
they couldn't upload 	I couldn't be uploading
you couldn't be uploading
he couldn't be uploading
we couldn't be uploading
you couldn't be uploading
they couldn't be uploading	I couldn't have uploaded
you couldn't have uploaded
he couldn't have uploaded
we couldn't have uploaded
you couldn't have uploaded
they couldn't have uploaded	I couldn't have been uploading
you couldn't have been uploading
he couldn't have been uploading
we couldn't have been uploading
you couldn't have been uploading
they couldn't have been uploading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I upload?
could you upload?
could he upload?
could we upload?
could you upload?
could they upload? 	could I be uploading?
could you be uploading?
could he be uploading?
could we be uploading?
could you be uploading?
could they be uploading? 	could I have uploaded?
could you have uploaded?
could he have uploaded?
could we have uploaded?
could you have uploaded?
could they have uploaded? 	could I have been uploading?
could you have been uploading?
could he have been uploading?
could we have been uploading?
could you have been uploading?
could they have been uploading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I upload?
couldn't you upload?
couldn't he upload?
couldn't we upload?
couldn't you upload?
couldn't they upload? 	couldn't I be uploading?
couldn't you be uploading?
couldn't he be uploading?
couldn't we be uploading?
couldn't you be uploading?
couldn't they be uploading? 	couldn't I have uploaded?
couldn't you have uploaded?
couldn't he have uploaded?
couldn't we have uploaded?
couldn't you have uploaded?
couldn't they have uploaded? 	couldn't I have been uploading?
couldn't you have been uploading?
couldn't he have been uploading?
couldn't we have been uploading?
couldn't you have been uploading?
couldn't they have been uploading?