English verb conjugation
CAN UNPACK

Regular verb: unpack - unpacked - unpacked

Affirmation

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

Negation

Simple form	V-ing form
I can't unpack you can't unpack he can't unpack we can't unpack you can't unpack they can't unpack	I can't be unpacking you can't be unpacking he can't be unpacking we can't be unpacking you can't be unpacking they can't be unpacking
Perfect	V-ing perfect
I can't have unpacked you can't have unpacked he can't have unpacked we can't have unpacked you can't have unpacked they can't have unpacked	I can't have been unpacking you can't have been unpacking he can't have been unpacking we can't have been unpacking you can't have been unpacking they can't have been unpacking

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I unpack? can't you unpack? can't he unpack? can't we unpack? can't you unpack? can't they unpack?	can't I be unpacking? can't you be unpacking? can't he be unpacking? can't we be unpacking? can't you be unpacking? can't they be unpacking?
Perfect	V-ing perfect
can't I have unpacked? can't you have unpacked? can't he have unpacked? can't we have unpacked? can't you have unpacked? can't they have unpacked?	can't I have been unpacking? can't you have been unpacking? can't he have been unpacking? can't we have been unpacking? can't you have been unpacking? can't they have been unpacking?