English verb conjugation
SHOULD ENTER

Regular verb: enter - entered - entered

Affirmation

Simple form	V-ing form
I'd enter you'd enter he'd enter we'd enter you'd enter they'd enter	I'd be entering you'd be entering he'd be entering we'd be entering you'd be entering they'd be entering
Perfect	V-ing perfect
I should've entered you should've entered he should've entered we should've entered you should've entered they should've entered	I should've been entering you should've been entering he should've been entering we should've been entering you should've been entering they should've been entering

Negation

Simple form	V-ing form
I shouldn't enter you shouldn't enter he shouldn't enter we shouldn't enter you shouldn't enter they shouldn't enter	I shouldn't be entering you shouldn't be entering he shouldn't be entering we shouldn't be entering you shouldn't be entering they shouldn't be entering
Perfect	V-ing perfect
I shouldn't have entered you shouldn't have entered he shouldn't have entered we shouldn't have entered you shouldn't have entered they shouldn't have entered	I shouldn't have been entering you shouldn't have been entering he shouldn't have been entering we shouldn't have been entering you shouldn't have been entering they shouldn't have been entering

Interrogative form

Simple form	V-ing form
should I enter? should you enter? should he enter? should we enter? should you enter? should they enter?	should I be entering? should you be entering? should he be entering? should we be entering? should you be entering? should they be entering?
Perfect	V-ing perfect
should I have entered? should you have entered? should he have entered? should we have entered? should you have entered? should they have entered?	should I have been entering? should you have been entering? should he have been entering? should we have been entering? should you have been entering? should they have been entering?

Interro-negative form

Simple form	V-ing form
shouldn't I enter? shouldn't you enter? shouldn't he enter? shouldn't we enter? shouldn't you enter? shouldn't they enter?	shouldn't I be entering? shouldn't you be entering? shouldn't he be entering? shouldn't we be entering? shouldn't you be entering? shouldn't they be entering?
Perfect	V-ing perfect
shouldn't I have entered? shouldn't you have entered? shouldn't he have entered? shouldn't we have entered? shouldn't you have entered? shouldn't they have entered?	shouldn't I have been entering? shouldn't you have been entering? shouldn't he have been entering? shouldn't we have been entering? shouldn't you have been entering? shouldn't they have been entering?