English verb conjugation
SHOULD GRIND

Irregular verb: grind - ground - ground

Affirmation

Simple form	V-ing form
I'd grind you'd grind he'd grind we'd grind you'd grind they'd grind	I'd be grinding you'd be grinding he'd be grinding we'd be grinding you'd be grinding they'd be grinding
Perfect	V-ing perfect
I should've ground you should've ground he should've ground we should've ground you should've ground they should've ground	I should've been grinding you should've been grinding he should've been grinding we should've been grinding you should've been grinding they should've been grinding

Negation

Simple form	V-ing form
I shouldn't grind you shouldn't grind he shouldn't grind we shouldn't grind you shouldn't grind they shouldn't grind	I shouldn't be grinding you shouldn't be grinding he shouldn't be grinding we shouldn't be grinding you shouldn't be grinding they shouldn't be grinding
Perfect	V-ing perfect
I shouldn't have ground you shouldn't have ground he shouldn't have ground we shouldn't have ground you shouldn't have ground they shouldn't have ground	I shouldn't have been grinding you shouldn't have been grinding he shouldn't have been grinding we shouldn't have been grinding you shouldn't have been grinding they shouldn't have been grinding

Interrogative form

Simple form	V-ing form
should I grind? should you grind? should he grind? should we grind? should you grind? should they grind?	should I be grinding? should you be grinding? should he be grinding? should we be grinding? should you be grinding? should they be grinding?
Perfect	V-ing perfect
should I have ground? should you have ground? should he have ground? should we have ground? should you have ground? should they have ground?	should I have been grinding? should you have been grinding? should he have been grinding? should we have been grinding? should you have been grinding? should they have been grinding?

Interro-negative form

Simple form	V-ing form
shouldn't I grind? shouldn't you grind? shouldn't he grind? shouldn't we grind? shouldn't you grind? shouldn't they grind?	shouldn't I be grinding? shouldn't you be grinding? shouldn't he be grinding? shouldn't we be grinding? shouldn't you be grinding? shouldn't they be grinding?
Perfect	V-ing perfect
shouldn't I have ground? shouldn't you have ground? shouldn't he have ground? shouldn't we have ground? shouldn't you have ground? shouldn't they have ground?	shouldn't I have been grinding? shouldn't you have been grinding? shouldn't he have been grinding? shouldn't we have been grinding? shouldn't you have been grinding? shouldn't they have been grinding?