English verb conjugation
SHOULD UNBOX

Regular verb: unbox - unboxed - unboxed

Affirmation

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

Negation

Simple form	V-ing form
I should not unbox you should not unbox he should not unbox we should not unbox you should not unbox they should not unbox	I should not be unboxing you should not be unboxing he should not be unboxing we should not be unboxing you should not be unboxing they should not be unboxing
Perfect	V-ing perfect
I should not have unboxed you should not have unboxed he should not have unboxed we should not have unboxed you should not have unboxed they should not have unboxed	I should not have been unboxing you should not have been unboxing he should not have been unboxing we should not have been unboxing you should not have been unboxing they should not have been unboxing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
should I not unbox? should you not unbox? should he not unbox? should we not unbox? should you not unbox? should they not unbox?	should I not be unboxing? should you not be unboxing? should he not be unboxing? should we not be unboxing? should you not be unboxing? should they not be unboxing?
Perfect	V-ing perfect
should I not have unboxed? should you not have unboxed? should he not have unboxed? should we not have unboxed? should you not have unboxed? should they not have unboxed?	should I not have been unboxing? should you not have been unboxing? should he not have been unboxing? should we not have been unboxing? should you not have been unboxing? should they not have been unboxing?