English verb conjugation
SHOULD THUD

Regular verb: thud - thudded - thudded

Affirmation

Simple form	V-ing form
I'd thud you'd thud he'd thud we'd thud you'd thud they'd thud	I'd be thudding you'd be thudding he'd be thudding we'd be thudding you'd be thudding they'd be thudding
Perfect	V-ing perfect
I should've thudded you should've thudded he should've thudded we should've thudded you should've thudded they should've thudded	I should've been thudding you should've been thudding he should've been thudding we should've been thudding you should've been thudding they should've been thudding

Negation

Simple form	V-ing form
I shouldn't thud you shouldn't thud he shouldn't thud we shouldn't thud you shouldn't thud they shouldn't thud	I shouldn't be thudding you shouldn't be thudding he shouldn't be thudding we shouldn't be thudding you shouldn't be thudding they shouldn't be thudding
Perfect	V-ing perfect
I shouldn't have thudded you shouldn't have thudded he shouldn't have thudded we shouldn't have thudded you shouldn't have thudded they shouldn't have thudded	I shouldn't have been thudding you shouldn't have been thudding he shouldn't have been thudding we shouldn't have been thudding you shouldn't have been thudding they shouldn't have been thudding

Interrogative form

Simple form	V-ing form
should I thud? should you thud? should he thud? should we thud? should you thud? should they thud?	should I be thudding? should you be thudding? should he be thudding? should we be thudding? should you be thudding? should they be thudding?
Perfect	V-ing perfect
should I have thudded? should you have thudded? should he have thudded? should we have thudded? should you have thudded? should they have thudded?	should I have been thudding? should you have been thudding? should he have been thudding? should we have been thudding? should you have been thudding? should they have been thudding?

Interro-negative form

Simple form	V-ing form
shouldn't I thud? shouldn't you thud? shouldn't he thud? shouldn't we thud? shouldn't you thud? shouldn't they thud?	shouldn't I be thudding? shouldn't you be thudding? shouldn't he be thudding? shouldn't we be thudding? shouldn't you be thudding? shouldn't they be thudding?
Perfect	V-ing perfect
shouldn't I have thudded? shouldn't you have thudded? shouldn't he have thudded? shouldn't we have thudded? shouldn't you have thudded? shouldn't they have thudded?	shouldn't I have been thudding? shouldn't you have been thudding? shouldn't he have been thudding? shouldn't we have been thudding? shouldn't you have been thudding? shouldn't they have been thudding?