English verb conjugation
CAN UNBOX

Regular verb: unbox - unboxed - unboxed

Affirmation

Simple form	V-ing form
I can unbox you can unbox she can unbox we can unbox you can unbox they can unbox	I can be unboxing you can be unboxing she can be unboxing we can be unboxing you can be unboxing they can be unboxing
Perfect	V-ing perfect
I can have unboxed you can have unboxed she can have unboxed we can have unboxed you can have unboxed they can have unboxed	I can have been unboxing you can have been unboxing she can have been unboxing we can have been unboxing you can have been unboxing they can have been unboxing

Negation

Simple form	V-ing form
I can't unbox you can't unbox she can't unbox we can't unbox you can't unbox they can't unbox	I can't be unboxing you can't be unboxing she can't be unboxing we can't be unboxing you can't be unboxing they can't be unboxing
Perfect	V-ing perfect
I can't have unboxed you can't have unboxed she can't have unboxed we can't have unboxed you can't have unboxed they can't have unboxed	I can't have been unboxing you can't have been unboxing she can't have been unboxing we can't have been unboxing you can't have been unboxing they can't have been unboxing

Interrogative form

Simple form	V-ing form
can I unbox? can you unbox? can she unbox? can we unbox? can you unbox? can they unbox?	can I be unboxing? can you be unboxing? can she be unboxing? can we be unboxing? can you be unboxing? can they be unboxing?
Perfect	V-ing perfect
can I have unboxed? can you have unboxed? can she have unboxed? can we have unboxed? can you have unboxed? can they have unboxed?	can I have been unboxing? can you have been unboxing? can she have been unboxing? can we have been unboxing? can you have been unboxing? can they have been unboxing?

Interro-negative form

Simple form	V-ing form
can't I unbox? can't you unbox? can't she unbox? can't we unbox? can't you unbox? can't they unbox?	can't I be unboxing? can't you be unboxing? can't she be unboxing? can't we be unboxing? can't you be unboxing? can't they be unboxing?
Perfect	V-ing perfect
can't I have unboxed? can't you have unboxed? can't she have unboxed? can't we have unboxed? can't you have unboxed? can't they have unboxed?	can't I have been unboxing? can't you have been unboxing? can't she have been unboxing? can't we have been unboxing? can't you have been unboxing? can't they have been unboxing?