English verb conjugation
SHOULD DRAIN

Regular verb: drain - drained - drained

Affirmation

Simple form	V-ing form
I'd drain you'd drain he'd drain we'd drain you'd drain they'd drain	I'd be draining you'd be draining he'd be draining we'd be draining you'd be draining they'd be draining
Perfect	V-ing perfect
I should've drained you should've drained he should've drained we should've drained you should've drained they should've drained	I should've been draining you should've been draining he should've been draining we should've been draining you should've been draining they should've been draining

Negation

Simple form	V-ing form
I shouldn't drain you shouldn't drain he shouldn't drain we shouldn't drain you shouldn't drain they shouldn't drain	I shouldn't be draining you shouldn't be draining he shouldn't be draining we shouldn't be draining you shouldn't be draining they shouldn't be draining
Perfect	V-ing perfect
I shouldn't have drained you shouldn't have drained he shouldn't have drained we shouldn't have drained you shouldn't have drained they shouldn't have drained	I shouldn't have been draining you shouldn't have been draining he shouldn't have been draining we shouldn't have been draining you shouldn't have been draining they shouldn't have been draining

Interrogative form

Simple form	V-ing form
should I drain? should you drain? should he drain? should we drain? should you drain? should they drain?	should I be draining? should you be draining? should he be draining? should we be draining? should you be draining? should they be draining?
Perfect	V-ing perfect
should I have drained? should you have drained? should he have drained? should we have drained? should you have drained? should they have drained?	should I have been draining? should you have been draining? should he have been draining? should we have been draining? should you have been draining? should they have been draining?

Interro-negative form

Simple form	V-ing form
shouldn't I drain? shouldn't you drain? shouldn't he drain? shouldn't we drain? shouldn't you drain? shouldn't they drain?	shouldn't I be draining? shouldn't you be draining? shouldn't he be draining? shouldn't we be draining? shouldn't you be draining? shouldn't they be draining?
Perfect	V-ing perfect
shouldn't I have drained? shouldn't you have drained? shouldn't he have drained? shouldn't we have drained? shouldn't you have drained? shouldn't they have drained?	shouldn't I have been draining? shouldn't you have been draining? shouldn't he have been draining? shouldn't we have been draining? shouldn't you have been draining? shouldn't they have been draining?