English verb conjugation
SHOULD THEORISE

Regular verb: theorise - theorised - theorised

Affirmation

Simple form	V-ing form
I'd theorise you'd theorise he'd theorise we'd theorise you'd theorise they'd theorise	I'd be theorising you'd be theorising he'd be theorising we'd be theorising you'd be theorising they'd be theorising
Perfect	V-ing perfect
I should've theorised you should've theorised he should've theorised we should've theorised you should've theorised they should've theorised	I should've been theorising you should've been theorising he should've been theorising we should've been theorising you should've been theorising they should've been theorising

Negation

Simple form	V-ing form
I shouldn't theorise you shouldn't theorise he shouldn't theorise we shouldn't theorise you shouldn't theorise they shouldn't theorise	I shouldn't be theorising you shouldn't be theorising he shouldn't be theorising we shouldn't be theorising you shouldn't be theorising they shouldn't be theorising
Perfect	V-ing perfect
I shouldn't have theorised you shouldn't have theorised he shouldn't have theorised we shouldn't have theorised you shouldn't have theorised they shouldn't have theorised	I shouldn't have been theorising you shouldn't have been theorising he shouldn't have been theorising we shouldn't have been theorising you shouldn't have been theorising they shouldn't have been theorising

Interrogative form

Simple form	V-ing form
should I theorise? should you theorise? should he theorise? should we theorise? should you theorise? should they theorise?	should I be theorising? should you be theorising? should he be theorising? should we be theorising? should you be theorising? should they be theorising?
Perfect	V-ing perfect
should I have theorised? should you have theorised? should he have theorised? should we have theorised? should you have theorised? should they have theorised?	should I have been theorising? should you have been theorising? should he have been theorising? should we have been theorising? should you have been theorising? should they have been theorising?

Interro-negative form

Simple form	V-ing form
shouldn't I theorise? shouldn't you theorise? shouldn't he theorise? shouldn't we theorise? shouldn't you theorise? shouldn't they theorise?	shouldn't I be theorising? shouldn't you be theorising? shouldn't he be theorising? shouldn't we be theorising? shouldn't you be theorising? shouldn't they be theorising?
Perfect	V-ing perfect
shouldn't I have theorised? shouldn't you have theorised? shouldn't he have theorised? shouldn't we have theorised? shouldn't you have theorised? shouldn't they have theorised?	shouldn't I have been theorising? shouldn't you have been theorising? shouldn't he have been theorising? shouldn't we have been theorising? shouldn't you have been theorising? shouldn't they have been theorising?