English verb conjugation
SHOULD PREWASH

Regular verb: prewash - prewashed - prewashed

Affirmation

Simple form	V-ing form
I'd prewash you'd prewash he'd prewash we'd prewash you'd prewash they'd prewash	I'd be prewashing you'd be prewashing he'd be prewashing we'd be prewashing you'd be prewashing they'd be prewashing
Perfect	V-ing perfect
I should've prewashed you should've prewashed he should've prewashed we should've prewashed you should've prewashed they should've prewashed	I should've been prewashing you should've been prewashing he should've been prewashing we should've been prewashing you should've been prewashing they should've been prewashing

Negation

Simple form	V-ing form
I shouldn't prewash you shouldn't prewash he shouldn't prewash we shouldn't prewash you shouldn't prewash they shouldn't prewash	I shouldn't be prewashing you shouldn't be prewashing he shouldn't be prewashing we shouldn't be prewashing you shouldn't be prewashing they shouldn't be prewashing
Perfect	V-ing perfect
I shouldn't have prewashed you shouldn't have prewashed he shouldn't have prewashed we shouldn't have prewashed you shouldn't have prewashed they shouldn't have prewashed	I shouldn't have been prewashing you shouldn't have been prewashing he shouldn't have been prewashing we shouldn't have been prewashing you shouldn't have been prewashing they shouldn't have been prewashing

Interrogative form

Simple form	V-ing form
should I prewash? should you prewash? should he prewash? should we prewash? should you prewash? should they prewash?	should I be prewashing? should you be prewashing? should he be prewashing? should we be prewashing? should you be prewashing? should they be prewashing?
Perfect	V-ing perfect
should I have prewashed? should you have prewashed? should he have prewashed? should we have prewashed? should you have prewashed? should they have prewashed?	should I have been prewashing? should you have been prewashing? should he have been prewashing? should we have been prewashing? should you have been prewashing? should they have been prewashing?

Interro-negative form

Simple form	V-ing form
shouldn't I prewash? shouldn't you prewash? shouldn't he prewash? shouldn't we prewash? shouldn't you prewash? shouldn't they prewash?	shouldn't I be prewashing? shouldn't you be prewashing? shouldn't he be prewashing? shouldn't we be prewashing? shouldn't you be prewashing? shouldn't they be prewashing?
Perfect	V-ing perfect
shouldn't I have prewashed? shouldn't you have prewashed? shouldn't he have prewashed? shouldn't we have prewashed? shouldn't you have prewashed? shouldn't they have prewashed?	shouldn't I have been prewashing? shouldn't you have been prewashing? shouldn't he have been prewashing? shouldn't we have been prewashing? shouldn't you have been prewashing? shouldn't they have been prewashing?