English verb conjugation
SHOULD THUD

Regular verb: thud - thudded - thudded

Affirmation

Simple form	V-ing form
I'd thud you'd thud she'd thud we'd thud you'd thud they'd thud	I'd be thudding you'd be thudding she'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 she 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 she 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 she 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 she 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 she 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 she 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 she thud? should we thud? should you thud? should they thud?	should I be thudding? should you be thudding? should she 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 she 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 she 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 she 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 she 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 she 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 she have been thudding? shouldn't we have been thudding? shouldn't you have been thudding? shouldn't they have been thudding?