could pack
Regular verb: pack - packed- packed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could pack
you could pack
she could pack
we could pack
you could pack
they could pack 	I could be packing
you could be packing
she could be packing
we could be packing
you could be packing
they could be packing	I could have packed
you could have packed
she could have packed
we could have packed
you could have packed
they could have packed	I could have been packing
you could have been packing
she could have been packing
we could have been packing
you could have been packing
they could have been packing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't pack
you couldn't pack
she couldn't pack
we couldn't pack
you couldn't pack
they couldn't pack 	I couldn't be packing
you couldn't be packing
she couldn't be packing
we couldn't be packing
you couldn't be packing
they couldn't be packing	I couldn't have packed
you couldn't have packed
she couldn't have packed
we couldn't have packed
you couldn't have packed
they couldn't have packed	I couldn't have been packing
you couldn't have been packing
she couldn't have been packing
we couldn't have been packing
you couldn't have been packing
they couldn't have been packing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I pack?
could you pack?
could she pack?
could we pack?
could you pack?
could they pack? 	could I be packing?
could you be packing?
could she be packing?
could we be packing?
could you be packing?
could they be packing? 	could I have packed?
could you have packed?
could she have packed?
could we have packed?
could you have packed?
could they have packed? 	could I have been packing?
could you have been packing?
could she have been packing?
could we have been packing?
could you have been packing?
could they have been packing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I pack?
couldn't you pack?
couldn't she pack?
couldn't we pack?
couldn't you pack?
couldn't they pack? 	couldn't I be packing?
couldn't you be packing?
couldn't she be packing?
couldn't we be packing?
couldn't you be packing?
couldn't they be packing? 	couldn't I have packed?
couldn't you have packed?
couldn't she have packed?
couldn't we have packed?
couldn't you have packed?
couldn't they have packed? 	couldn't I have been packing?
couldn't you have been packing?
couldn't she have been packing?
couldn't we have been packing?
couldn't you have been packing?
couldn't they have been packing?