English verb conjugation
SHOULD RETREAT

Regular verb: retreat - retreated - retreated

Affirmation

Simple form	V-ing form
I should retreat you should retreat he should retreat we should retreat you should retreat they should retreat	I should be retreating you should be retreating he should be retreating we should be retreating you should be retreating they should be retreating
Perfect	V-ing perfect
I should have retreated you should have retreated he should have retreated we should have retreated you should have retreated they should have retreated	I should have been retreating you should have been retreating he should have been retreating we should have been retreating you should have been retreating they should have been retreating

Negation

Simple form	V-ing form
I should not retreat you should not retreat he should not retreat we should not retreat you should not retreat they should not retreat	I should not be retreating you should not be retreating he should not be retreating we should not be retreating you should not be retreating they should not be retreating
Perfect	V-ing perfect
I should not have retreated you should not have retreated he should not have retreated we should not have retreated you should not have retreated they should not have retreated	I should not have been retreating you should not have been retreating he should not have been retreating we should not have been retreating you should not have been retreating they should not have been retreating

Interrogative form

Simple form	V-ing form
should I retreat? should you retreat? should he retreat? should we retreat? should you retreat? should they retreat?	should I be retreating? should you be retreating? should he be retreating? should we be retreating? should you be retreating? should they be retreating?
Perfect	V-ing perfect
should I have retreated? should you have retreated? should he have retreated? should we have retreated? should you have retreated? should they have retreated?	should I have been retreating? should you have been retreating? should he have been retreating? should we have been retreating? should you have been retreating? should they have been retreating?

Interro-negative form

Simple form	V-ing form
should I not retreat? should you not retreat? should he not retreat? should we not retreat? should you not retreat? should they not retreat?	should I not be retreating? should you not be retreating? should he not be retreating? should we not be retreating? should you not be retreating? should they not be retreating?
Perfect	V-ing perfect
should I not have retreated? should you not have retreated? should he not have retreated? should we not have retreated? should you not have retreated? should they not have retreated?	should I not have been retreating? should you not have been retreating? should he not have been retreating? should we not have been retreating? should you not have been retreating? should they not have been retreating?