English verb conjugation
SHOULD CONTEND

Regular verb: contend - contended - contended

Affirmation

Simple form	V-ing form
I should contend you should contend he should contend we should contend you should contend they should contend	I should be contending you should be contending he should be contending we should be contending you should be contending they should be contending
Perfect	V-ing perfect
I should have contended you should have contended he should have contended we should have contended you should have contended they should have contended	I should have been contending you should have been contending he should have been contending we should have been contending you should have been contending they should have been contending

Negation

Simple form	V-ing form
I should not contend you should not contend he should not contend we should not contend you should not contend they should not contend	I should not be contending you should not be contending he should not be contending we should not be contending you should not be contending they should not be contending
Perfect	V-ing perfect
I should not have contended you should not have contended he should not have contended we should not have contended you should not have contended they should not have contended	I should not have been contending you should not have been contending he should not have been contending we should not have been contending you should not have been contending they should not have been contending

Interrogative form

Simple form	V-ing form
should I contend? should you contend? should he contend? should we contend? should you contend? should they contend?	should I be contending? should you be contending? should he be contending? should we be contending? should you be contending? should they be contending?
Perfect	V-ing perfect
should I have contended? should you have contended? should he have contended? should we have contended? should you have contended? should they have contended?	should I have been contending? should you have been contending? should he have been contending? should we have been contending? should you have been contending? should they have been contending?

Interro-negative form

Simple form	V-ing form
should I not contend? should you not contend? should he not contend? should we not contend? should you not contend? should they not contend?	should I not be contending? should you not be contending? should he not be contending? should we not be contending? should you not be contending? should they not be contending?
Perfect	V-ing perfect
should I not have contended? should you not have contended? should he not have contended? should we not have contended? should you not have contended? should they not have contended?	should I not have been contending? should you not have been contending? should he not have been contending? should we not have been contending? should you not have been contending? should they not have been contending?