could upsize
Regular verb: upsize - upsized- upsized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could upsize
you could upsize
she could upsize
we could upsize
you could upsize
they could upsize 	I could be upsizing
you could be upsizing
she could be upsizing
we could be upsizing
you could be upsizing
they could be upsizing	I could have upsized
you could have upsized
she could have upsized
we could have upsized
you could have upsized
they could have upsized	I could have been upsizing
you could have been upsizing
she could have been upsizing
we could have been upsizing
you could have been upsizing
they could have been upsizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't upsize
you couldn't upsize
she couldn't upsize
we couldn't upsize
you couldn't upsize
they couldn't upsize 	I couldn't be upsizing
you couldn't be upsizing
she couldn't be upsizing
we couldn't be upsizing
you couldn't be upsizing
they couldn't be upsizing	I couldn't have upsized
you couldn't have upsized
she couldn't have upsized
we couldn't have upsized
you couldn't have upsized
they couldn't have upsized	I couldn't have been upsizing
you couldn't have been upsizing
she couldn't have been upsizing
we couldn't have been upsizing
you couldn't have been upsizing
they couldn't have been upsizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I upsize?
could you upsize?
could she upsize?
could we upsize?
could you upsize?
could they upsize? 	could I be upsizing?
could you be upsizing?
could she be upsizing?
could we be upsizing?
could you be upsizing?
could they be upsizing? 	could I have upsized?
could you have upsized?
could she have upsized?
could we have upsized?
could you have upsized?
could they have upsized? 	could I have been upsizing?
could you have been upsizing?
could she have been upsizing?
could we have been upsizing?
could you have been upsizing?
could they have been upsizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I upsize?
couldn't you upsize?
couldn't she upsize?
couldn't we upsize?
couldn't you upsize?
couldn't they upsize? 	couldn't I be upsizing?
couldn't you be upsizing?
couldn't she be upsizing?
couldn't we be upsizing?
couldn't you be upsizing?
couldn't they be upsizing? 	couldn't I have upsized?
couldn't you have upsized?
couldn't she have upsized?
couldn't we have upsized?
couldn't you have upsized?
couldn't they have upsized? 	couldn't I have been upsizing?
couldn't you have been upsizing?
couldn't she have been upsizing?
couldn't we have been upsizing?
couldn't you have been upsizing?
couldn't they have been upsizing?