English verb conjugation
SHOULD PREPLAN

Regular verb: preplan - preplaned - preplaned

Affirmation

Simple form	V-ing form
I'd preplan you'd preplan he'd preplan we'd preplan you'd preplan they'd preplan	I'd be preplaning you'd be preplaning he'd be preplaning we'd be preplaning you'd be preplaning they'd be preplaning
Perfect	V-ing perfect
I should've preplaned you should've preplaned he should've preplaned we should've preplaned you should've preplaned they should've preplaned	I should've been preplaning you should've been preplaning he should've been preplaning we should've been preplaning you should've been preplaning they should've been preplaning

Negation

Simple form	V-ing form
I shouldn't preplan you shouldn't preplan he shouldn't preplan we shouldn't preplan you shouldn't preplan they shouldn't preplan	I shouldn't be preplaning you shouldn't be preplaning he shouldn't be preplaning we shouldn't be preplaning you shouldn't be preplaning they shouldn't be preplaning
Perfect	V-ing perfect
I shouldn't have preplaned you shouldn't have preplaned he shouldn't have preplaned we shouldn't have preplaned you shouldn't have preplaned they shouldn't have preplaned	I shouldn't have been preplaning you shouldn't have been preplaning he shouldn't have been preplaning we shouldn't have been preplaning you shouldn't have been preplaning they shouldn't have been preplaning

Interrogative form

Simple form	V-ing form
should I preplan? should you preplan? should he preplan? should we preplan? should you preplan? should they preplan?	should I be preplaning? should you be preplaning? should he be preplaning? should we be preplaning? should you be preplaning? should they be preplaning?
Perfect	V-ing perfect
should I have preplaned? should you have preplaned? should he have preplaned? should we have preplaned? should you have preplaned? should they have preplaned?	should I have been preplaning? should you have been preplaning? should he have been preplaning? should we have been preplaning? should you have been preplaning? should they have been preplaning?

Interro-negative form

Simple form	V-ing form
shouldn't I preplan? shouldn't you preplan? shouldn't he preplan? shouldn't we preplan? shouldn't you preplan? shouldn't they preplan?	shouldn't I be preplaning? shouldn't you be preplaning? shouldn't he be preplaning? shouldn't we be preplaning? shouldn't you be preplaning? shouldn't they be preplaning?
Perfect	V-ing perfect
shouldn't I have preplaned? shouldn't you have preplaned? shouldn't he have preplaned? shouldn't we have preplaned? shouldn't you have preplaned? shouldn't they have preplaned?	shouldn't I have been preplaning? shouldn't you have been preplaning? shouldn't he have been preplaning? shouldn't we have been preplaning? shouldn't you have been preplaning? shouldn't they have been preplaning?