English verb conjugation
SHOULD NOD

Regular verb: nod - nodded - nodded

Affirmation

Simple form	V-ing form
I'd nod you'd nod he'd nod we'd nod you'd nod they'd nod	I'd be nodding you'd be nodding he'd be nodding we'd be nodding you'd be nodding they'd be nodding
Perfect	V-ing perfect
I should've nodded you should've nodded he should've nodded we should've nodded you should've nodded they should've nodded	I should've been nodding you should've been nodding he should've been nodding we should've been nodding you should've been nodding they should've been nodding

Negation

Simple form	V-ing form
I shouldn't nod you shouldn't nod he shouldn't nod we shouldn't nod you shouldn't nod they shouldn't nod	I shouldn't be nodding you shouldn't be nodding he shouldn't be nodding we shouldn't be nodding you shouldn't be nodding they shouldn't be nodding
Perfect	V-ing perfect
I shouldn't have nodded you shouldn't have nodded he shouldn't have nodded we shouldn't have nodded you shouldn't have nodded they shouldn't have nodded	I shouldn't have been nodding you shouldn't have been nodding he shouldn't have been nodding we shouldn't have been nodding you shouldn't have been nodding they shouldn't have been nodding

Interrogative form

Simple form	V-ing form
should I nod? should you nod? should he nod? should we nod? should you nod? should they nod?	should I be nodding? should you be nodding? should he be nodding? should we be nodding? should you be nodding? should they be nodding?
Perfect	V-ing perfect
should I have nodded? should you have nodded? should he have nodded? should we have nodded? should you have nodded? should they have nodded?	should I have been nodding? should you have been nodding? should he have been nodding? should we have been nodding? should you have been nodding? should they have been nodding?

Interro-negative form

Simple form	V-ing form
shouldn't I nod? shouldn't you nod? shouldn't he nod? shouldn't we nod? shouldn't you nod? shouldn't they nod?	shouldn't I be nodding? shouldn't you be nodding? shouldn't he be nodding? shouldn't we be nodding? shouldn't you be nodding? shouldn't they be nodding?
Perfect	V-ing perfect
shouldn't I have nodded? shouldn't you have nodded? shouldn't he have nodded? shouldn't we have nodded? shouldn't you have nodded? shouldn't they have nodded?	shouldn't I have been nodding? shouldn't you have been nodding? shouldn't he have been nodding? shouldn't we have been nodding? shouldn't you have been nodding? shouldn't they have been nodding?