could package
Regular verb: package - packaged- packaged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could package
you could package
she could package
we could package
you could package
they could package 	I could be packaging
you could be packaging
she could be packaging
we could be packaging
you could be packaging
they could be packaging	I could have packaged
you could have packaged
she could have packaged
we could have packaged
you could have packaged
they could have packaged	I could have been packaging
you could have been packaging
she could have been packaging
we could have been packaging
you could have been packaging
they could have been packaging	

Negation 	
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I couldn't package
you couldn't package
she couldn't package
we couldn't package
you couldn't package
they couldn't package 	I couldn't be packaging
you couldn't be packaging
she couldn't be packaging
we couldn't be packaging
you couldn't be packaging
they couldn't be packaging	I couldn't have packaged
you couldn't have packaged
she couldn't have packaged
we couldn't have packaged
you couldn't have packaged
they couldn't have packaged	I couldn't have been packaging
you couldn't have been packaging
she couldn't have been packaging
we couldn't have been packaging
you couldn't have been packaging
they couldn't have been packaging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I package?
could you package?
could she package?
could we package?
could you package?
could they package? 	could I be packaging?
could you be packaging?
could she be packaging?
could we be packaging?
could you be packaging?
could they be packaging? 	could I have packaged?
could you have packaged?
could she have packaged?
could we have packaged?
could you have packaged?
could they have packaged? 	could I have been packaging?
could you have been packaging?
could she have been packaging?
could we have been packaging?
could you have been packaging?
could they have been packaging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I package?
couldn't you package?
couldn't she package?
couldn't we package?
couldn't you package?
couldn't they package? 	couldn't I be packaging?
couldn't you be packaging?
couldn't she be packaging?
couldn't we be packaging?
couldn't you be packaging?
couldn't they be packaging? 	couldn't I have packaged?
couldn't you have packaged?
couldn't she have packaged?
couldn't we have packaged?
couldn't you have packaged?
couldn't they have packaged? 	couldn't I have been packaging?
couldn't you have been packaging?
couldn't she have been packaging?
couldn't we have been packaging?
couldn't you have been packaging?
couldn't they have been packaging?