English verb conjugation
SHOULD SUBTEND

Regular verb: subtend - subtended - subtended

Affirmation

Simple form	V-ing form
I'd subtend you'd subtend he'd subtend we'd subtend you'd subtend they'd subtend	I'd be subtending you'd be subtending he'd be subtending we'd be subtending you'd be subtending they'd be subtending
Perfect	V-ing perfect
I should've subtended you should've subtended he should've subtended we should've subtended you should've subtended they should've subtended	I should've been subtending you should've been subtending he should've been subtending we should've been subtending you should've been subtending they should've been subtending

Negation

Simple form	V-ing form
I shouldn't subtend you shouldn't subtend he shouldn't subtend we shouldn't subtend you shouldn't subtend they shouldn't subtend	I shouldn't be subtending you shouldn't be subtending he shouldn't be subtending we shouldn't be subtending you shouldn't be subtending they shouldn't be subtending
Perfect	V-ing perfect
I shouldn't have subtended you shouldn't have subtended he shouldn't have subtended we shouldn't have subtended you shouldn't have subtended they shouldn't have subtended	I shouldn't have been subtending you shouldn't have been subtending he shouldn't have been subtending we shouldn't have been subtending you shouldn't have been subtending they shouldn't have been subtending

Interrogative form

Simple form	V-ing form
should I subtend? should you subtend? should he subtend? should we subtend? should you subtend? should they subtend?	should I be subtending? should you be subtending? should he be subtending? should we be subtending? should you be subtending? should they be subtending?
Perfect	V-ing perfect
should I have subtended? should you have subtended? should he have subtended? should we have subtended? should you have subtended? should they have subtended?	should I have been subtending? should you have been subtending? should he have been subtending? should we have been subtending? should you have been subtending? should they have been subtending?

Interro-negative form

Simple form	V-ing form
shouldn't I subtend? shouldn't you subtend? shouldn't he subtend? shouldn't we subtend? shouldn't you subtend? shouldn't they subtend?	shouldn't I be subtending? shouldn't you be subtending? shouldn't he be subtending? shouldn't we be subtending? shouldn't you be subtending? shouldn't they be subtending?
Perfect	V-ing perfect
shouldn't I have subtended? shouldn't you have subtended? shouldn't he have subtended? shouldn't we have subtended? shouldn't you have subtended? shouldn't they have subtended?	shouldn't I have been subtending? shouldn't you have been subtending? shouldn't he have been subtending? shouldn't we have been subtending? shouldn't you have been subtending? shouldn't they have been subtending?