English verb conjugation
SHOULD SPECULATE

Regular verb: speculate - speculated - speculated

Affirmation

Simple form	V-ing form
I'd speculate you'd speculate she'd speculate we'd speculate you'd speculate they'd speculate	I'd be speculating you'd be speculating she'd be speculating we'd be speculating you'd be speculating they'd be speculating
Perfect	V-ing perfect
I should've speculated you should've speculated she should've speculated we should've speculated you should've speculated they should've speculated	I should've been speculating you should've been speculating she should've been speculating we should've been speculating you should've been speculating they should've been speculating

Negation

Simple form	V-ing form
I shouldn't speculate you shouldn't speculate she shouldn't speculate we shouldn't speculate you shouldn't speculate they shouldn't speculate	I shouldn't be speculating you shouldn't be speculating she shouldn't be speculating we shouldn't be speculating you shouldn't be speculating they shouldn't be speculating
Perfect	V-ing perfect
I shouldn't have speculated you shouldn't have speculated she shouldn't have speculated we shouldn't have speculated you shouldn't have speculated they shouldn't have speculated	I shouldn't have been speculating you shouldn't have been speculating she shouldn't have been speculating we shouldn't have been speculating you shouldn't have been speculating they shouldn't have been speculating

Interrogative form

Simple form	V-ing form
should I speculate? should you speculate? should she speculate? should we speculate? should you speculate? should they speculate?	should I be speculating? should you be speculating? should she be speculating? should we be speculating? should you be speculating? should they be speculating?
Perfect	V-ing perfect
should I have speculated? should you have speculated? should she have speculated? should we have speculated? should you have speculated? should they have speculated?	should I have been speculating? should you have been speculating? should she have been speculating? should we have been speculating? should you have been speculating? should they have been speculating?

Interro-negative form

Simple form	V-ing form
shouldn't I speculate? shouldn't you speculate? shouldn't she speculate? shouldn't we speculate? shouldn't you speculate? shouldn't they speculate?	shouldn't I be speculating? shouldn't you be speculating? shouldn't she be speculating? shouldn't we be speculating? shouldn't you be speculating? shouldn't they be speculating?
Perfect	V-ing perfect
shouldn't I have speculated? shouldn't you have speculated? shouldn't she have speculated? shouldn't we have speculated? shouldn't you have speculated? shouldn't they have speculated?	shouldn't I have been speculating? shouldn't you have been speculating? shouldn't she have been speculating? shouldn't we have been speculating? shouldn't you have been speculating? shouldn't they have been speculating?