could um
Regular verb: um - umed- umed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could um
you could um
she could um
we could um
you could um
they could um 	I could be uming
you could be uming
she could be uming
we could be uming
you could be uming
they could be uming	I could have umed
you could have umed
she could have umed
we could have umed
you could have umed
they could have umed	I could have been uming
you could have been uming
she could have been uming
we could have been uming
you could have been uming
they could have been uming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't um
you couldn't um
she couldn't um
we couldn't um
you couldn't um
they couldn't um 	I couldn't be uming
you couldn't be uming
she couldn't be uming
we couldn't be uming
you couldn't be uming
they couldn't be uming	I couldn't have umed
you couldn't have umed
she couldn't have umed
we couldn't have umed
you couldn't have umed
they couldn't have umed	I couldn't have been uming
you couldn't have been uming
she couldn't have been uming
we couldn't have been uming
you couldn't have been uming
they couldn't have been uming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I um?
could you um?
could she um?
could we um?
could you um?
could they um? 	could I be uming?
could you be uming?
could she be uming?
could we be uming?
could you be uming?
could they be uming? 	could I have umed?
could you have umed?
could she have umed?
could we have umed?
could you have umed?
could they have umed? 	could I have been uming?
could you have been uming?
could she have been uming?
could we have been uming?
could you have been uming?
could they have been uming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I um?
couldn't you um?
couldn't she um?
couldn't we um?
couldn't you um?
couldn't they um? 	couldn't I be uming?
couldn't you be uming?
couldn't she be uming?
couldn't we be uming?
couldn't you be uming?
couldn't they be uming? 	couldn't I have umed?
couldn't you have umed?
couldn't she have umed?
couldn't we have umed?
couldn't you have umed?
couldn't they have umed? 	couldn't I have been uming?
couldn't you have been uming?
couldn't she have been uming?
couldn't we have been uming?
couldn't you have been uming?
couldn't they have been uming?