English verb conjugation
SHOULD PLAN

Regular verb: plan - planned - planned

Affirmation

Simple form	V-ing form
I'd plan you'd plan he'd plan we'd plan you'd plan they'd plan	I'd be planning you'd be planning he'd be planning we'd be planning you'd be planning they'd be planning
Perfect	V-ing perfect
I should've planned you should've planned he should've planned we should've planned you should've planned they should've planned	I should've been planning you should've been planning he should've been planning we should've been planning you should've been planning they should've been planning

Negation

Simple form	V-ing form
I shouldn't plan you shouldn't plan he shouldn't plan we shouldn't plan you shouldn't plan they shouldn't plan	I shouldn't be planning you shouldn't be planning he shouldn't be planning we shouldn't be planning you shouldn't be planning they shouldn't be planning
Perfect	V-ing perfect
I shouldn't have planned you shouldn't have planned he shouldn't have planned we shouldn't have planned you shouldn't have planned they shouldn't have planned	I shouldn't have been planning you shouldn't have been planning he shouldn't have been planning we shouldn't have been planning you shouldn't have been planning they shouldn't have been planning

Interrogative form

Simple form	V-ing form
should I plan? should you plan? should he plan? should we plan? should you plan? should they plan?	should I be planning? should you be planning? should he be planning? should we be planning? should you be planning? should they be planning?
Perfect	V-ing perfect
should I have planned? should you have planned? should he have planned? should we have planned? should you have planned? should they have planned?	should I have been planning? should you have been planning? should he have been planning? should we have been planning? should you have been planning? should they have been planning?

Interro-negative form

Simple form	V-ing form
shouldn't I plan? shouldn't you plan? shouldn't he plan? shouldn't we plan? shouldn't you plan? shouldn't they plan?	shouldn't I be planning? shouldn't you be planning? shouldn't he be planning? shouldn't we be planning? shouldn't you be planning? shouldn't they be planning?
Perfect	V-ing perfect
shouldn't I have planned? shouldn't you have planned? shouldn't he have planned? shouldn't we have planned? shouldn't you have planned? shouldn't they have planned?	shouldn't I have been planning? shouldn't you have been planning? shouldn't he have been planning? shouldn't we have been planning? shouldn't you have been planning? shouldn't they have been planning?