could unpack
Regular verb: unpack - unpacked- unpacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could unpack
you could unpack
he could unpack
we could unpack
you could unpack
they could unpack 	I could be unpacking
you could be unpacking
he could be unpacking
we could be unpacking
you could be unpacking
they could be unpacking	I could have unpacked
you could have unpacked
he could have unpacked
we could have unpacked
you could have unpacked
they could have unpacked	I could have been unpacking
you could have been unpacking
he could have been unpacking
we could have been unpacking
you could have been unpacking
they could have been unpacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not unpack
you could not unpack
he could not unpack
we could not unpack
you could not unpack
they could not unpack 	I could not be unpacking
you could not be unpacking
he could not be unpacking
we could not be unpacking
you could not be unpacking
they could not be unpacking	I could not have unpacked
you could not have unpacked
he could not have unpacked
we could not have unpacked
you could not have unpacked
they could not have unpacked	I could not have been unpacking
you could not have been unpacking
he could not have been unpacking
we could not have been unpacking
you could not have been unpacking
they could not have been unpacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I unpack?
could you unpack?
could he unpack?
could we unpack?
could you unpack?
could they unpack? 	could I be unpacking?
could you be unpacking?
could he be unpacking?
could we be unpacking?
could you be unpacking?
could they be unpacking? 	could I have unpacked?
could you have unpacked?
could he have unpacked?
could we have unpacked?
could you have unpacked?
could they have unpacked? 	could I have been unpacking?
could you have been unpacking?
could he have been unpacking?
could we have been unpacking?
could you have been unpacking?
could they have been unpacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not unpack?
could you not unpack?
could he not unpack?
could we not unpack?
could you not unpack?
could they not unpack? 	could I not be unpacking?
could you not be unpacking?
could he not be unpacking?
could we not be unpacking?
could you not be unpacking?
could they not be unpacking? 	could I not have unpacked?
could you not have unpacked?
could he not have unpacked?
could we not have unpacked?
could you not have unpacked?
could they not have unpacked? 	could I not have been unpacking?
could you not have been unpacking?
could he not have been unpacking?
could we not have been unpacking?
could you not have been unpacking?
could they not have been unpacking?