English verb conjugation
SHOULD THUMBTACK

Regular verb: thumbtack - thumbtacked - thumbtacked

Affirmation

Simple form	V-ing form
I'd thumbtack you'd thumbtack he'd thumbtack we'd thumbtack you'd thumbtack they'd thumbtack	I'd be thumbtacking you'd be thumbtacking he'd be thumbtacking we'd be thumbtacking you'd be thumbtacking they'd be thumbtacking
Perfect	V-ing perfect
I should've thumbtacked you should've thumbtacked he should've thumbtacked we should've thumbtacked you should've thumbtacked they should've thumbtacked	I should've been thumbtacking you should've been thumbtacking he should've been thumbtacking we should've been thumbtacking you should've been thumbtacking they should've been thumbtacking

Negation

Simple form	V-ing form
I shouldn't thumbtack you shouldn't thumbtack he shouldn't thumbtack we shouldn't thumbtack you shouldn't thumbtack they shouldn't thumbtack	I shouldn't be thumbtacking you shouldn't be thumbtacking he shouldn't be thumbtacking we shouldn't be thumbtacking you shouldn't be thumbtacking they shouldn't be thumbtacking
Perfect	V-ing perfect
I shouldn't have thumbtacked you shouldn't have thumbtacked he shouldn't have thumbtacked we shouldn't have thumbtacked you shouldn't have thumbtacked they shouldn't have thumbtacked	I shouldn't have been thumbtacking you shouldn't have been thumbtacking he shouldn't have been thumbtacking we shouldn't have been thumbtacking you shouldn't have been thumbtacking they shouldn't have been thumbtacking

Interrogative form

Simple form	V-ing form
should I thumbtack? should you thumbtack? should he thumbtack? should we thumbtack? should you thumbtack? should they thumbtack?	should I be thumbtacking? should you be thumbtacking? should he be thumbtacking? should we be thumbtacking? should you be thumbtacking? should they be thumbtacking?
Perfect	V-ing perfect
should I have thumbtacked? should you have thumbtacked? should he have thumbtacked? should we have thumbtacked? should you have thumbtacked? should they have thumbtacked?	should I have been thumbtacking? should you have been thumbtacking? should he have been thumbtacking? should we have been thumbtacking? should you have been thumbtacking? should they have been thumbtacking?

Interro-negative form

Simple form	V-ing form
shouldn't I thumbtack? shouldn't you thumbtack? shouldn't he thumbtack? shouldn't we thumbtack? shouldn't you thumbtack? shouldn't they thumbtack?	shouldn't I be thumbtacking? shouldn't you be thumbtacking? shouldn't he be thumbtacking? shouldn't we be thumbtacking? shouldn't you be thumbtacking? shouldn't they be thumbtacking?
Perfect	V-ing perfect
shouldn't I have thumbtacked? shouldn't you have thumbtacked? shouldn't he have thumbtacked? shouldn't we have thumbtacked? shouldn't you have thumbtacked? shouldn't they have thumbtacked?	shouldn't I have been thumbtacking? shouldn't you have been thumbtacking? shouldn't he have been thumbtacking? shouldn't we have been thumbtacking? shouldn't you have been thumbtacking? shouldn't they have been thumbtacking?