English verb conjugation
SHOULD FORM

Regular verb: form - formed - formed

Affirmation

Simple form	V-ing form
I'd form you'd form she'd form we'd form you'd form they'd form	I'd be forming you'd be forming she'd be forming we'd be forming you'd be forming they'd be forming
Perfect	V-ing perfect
I should've formed you should've formed she should've formed we should've formed you should've formed they should've formed	I should've been forming you should've been forming she should've been forming we should've been forming you should've been forming they should've been forming

Negation

Simple form	V-ing form
I shouldn't form you shouldn't form she shouldn't form we shouldn't form you shouldn't form they shouldn't form	I shouldn't be forming you shouldn't be forming she shouldn't be forming we shouldn't be forming you shouldn't be forming they shouldn't be forming
Perfect	V-ing perfect
I shouldn't have formed you shouldn't have formed she shouldn't have formed we shouldn't have formed you shouldn't have formed they shouldn't have formed	I shouldn't have been forming you shouldn't have been forming she shouldn't have been forming we shouldn't have been forming you shouldn't have been forming they shouldn't have been forming

Interrogative form

Simple form	V-ing form
should I form? should you form? should she form? should we form? should you form? should they form?	should I be forming? should you be forming? should she be forming? should we be forming? should you be forming? should they be forming?
Perfect	V-ing perfect
should I have formed? should you have formed? should she have formed? should we have formed? should you have formed? should they have formed?	should I have been forming? should you have been forming? should she have been forming? should we have been forming? should you have been forming? should they have been forming?

Interro-negative form

Simple form	V-ing form
shouldn't I form? shouldn't you form? shouldn't she form? shouldn't we form? shouldn't you form? shouldn't they form?	shouldn't I be forming? shouldn't you be forming? shouldn't she be forming? shouldn't we be forming? shouldn't you be forming? shouldn't they be forming?
Perfect	V-ing perfect
shouldn't I have formed? shouldn't you have formed? shouldn't she have formed? shouldn't we have formed? shouldn't you have formed? shouldn't they have formed?	shouldn't I have been forming? shouldn't you have been forming? shouldn't she have been forming? shouldn't we have been forming? shouldn't you have been forming? shouldn't they have been forming?