English verb conjugation
SHOULD FIRST-FOOT

Regular verb: first-foot - first-footed - first-footed

Affirmation

Simple form	V-ing form
I'd first-foot you'd first-foot he'd first-foot we'd first-foot you'd first-foot they'd first-foot	I'd be first-footing you'd be first-footing he'd be first-footing we'd be first-footing you'd be first-footing they'd be first-footing
Perfect	V-ing perfect
I should've first-footed you should've first-footed he should've first-footed we should've first-footed you should've first-footed they should've first-footed	I should've been first-footing you should've been first-footing he should've been first-footing we should've been first-footing you should've been first-footing they should've been first-footing

Negation

Simple form	V-ing form
I shouldn't first-foot you shouldn't first-foot he shouldn't first-foot we shouldn't first-foot you shouldn't first-foot they shouldn't first-foot	I shouldn't be first-footing you shouldn't be first-footing he shouldn't be first-footing we shouldn't be first-footing you shouldn't be first-footing they shouldn't be first-footing
Perfect	V-ing perfect
I shouldn't have first-footed you shouldn't have first-footed he shouldn't have first-footed we shouldn't have first-footed you shouldn't have first-footed they shouldn't have first-footed	I shouldn't have been first-footing you shouldn't have been first-footing he shouldn't have been first-footing we shouldn't have been first-footing you shouldn't have been first-footing they shouldn't have been first-footing

Interrogative form

Simple form	V-ing form
should I first-foot? should you first-foot? should he first-foot? should we first-foot? should you first-foot? should they first-foot?	should I be first-footing? should you be first-footing? should he be first-footing? should we be first-footing? should you be first-footing? should they be first-footing?
Perfect	V-ing perfect
should I have first-footed? should you have first-footed? should he have first-footed? should we have first-footed? should you have first-footed? should they have first-footed?	should I have been first-footing? should you have been first-footing? should he have been first-footing? should we have been first-footing? should you have been first-footing? should they have been first-footing?

Interro-negative form

Simple form	V-ing form
shouldn't I first-foot? shouldn't you first-foot? shouldn't he first-foot? shouldn't we first-foot? shouldn't you first-foot? shouldn't they first-foot?	shouldn't I be first-footing? shouldn't you be first-footing? shouldn't he be first-footing? shouldn't we be first-footing? shouldn't you be first-footing? shouldn't they be first-footing?
Perfect	V-ing perfect
shouldn't I have first-footed? shouldn't you have first-footed? shouldn't he have first-footed? shouldn't we have first-footed? shouldn't you have first-footed? shouldn't they have first-footed?	shouldn't I have been first-footing? shouldn't you have been first-footing? shouldn't he have been first-footing? shouldn't we have been first-footing? shouldn't you have been first-footing? shouldn't they have been first-footing?