English verb conjugation
SHOULD GRAVEL

Regular verb: gravel - gravelled - gravelled

Affirmation

Simple form	V-ing form
I'd gravel you'd gravel he'd gravel we'd gravel you'd gravel they'd gravel	I'd be gravelling you'd be gravelling he'd be gravelling we'd be gravelling you'd be gravelling they'd be gravelling
Perfect	V-ing perfect
I should've gravelled you should've gravelled he should've gravelled we should've gravelled you should've gravelled they should've gravelled	I should've been gravelling you should've been gravelling he should've been gravelling we should've been gravelling you should've been gravelling they should've been gravelling

Negation

Simple form	V-ing form
I shouldn't gravel you shouldn't gravel he shouldn't gravel we shouldn't gravel you shouldn't gravel they shouldn't gravel	I shouldn't be gravelling you shouldn't be gravelling he shouldn't be gravelling we shouldn't be gravelling you shouldn't be gravelling they shouldn't be gravelling
Perfect	V-ing perfect
I shouldn't have gravelled you shouldn't have gravelled he shouldn't have gravelled we shouldn't have gravelled you shouldn't have gravelled they shouldn't have gravelled	I shouldn't have been gravelling you shouldn't have been gravelling he shouldn't have been gravelling we shouldn't have been gravelling you shouldn't have been gravelling they shouldn't have been gravelling

Interrogative form

Simple form	V-ing form
should I gravel? should you gravel? should he gravel? should we gravel? should you gravel? should they gravel?	should I be gravelling? should you be gravelling? should he be gravelling? should we be gravelling? should you be gravelling? should they be gravelling?
Perfect	V-ing perfect
should I have gravelled? should you have gravelled? should he have gravelled? should we have gravelled? should you have gravelled? should they have gravelled?	should I have been gravelling? should you have been gravelling? should he have been gravelling? should we have been gravelling? should you have been gravelling? should they have been gravelling?

Interro-negative form

Simple form	V-ing form
shouldn't I gravel? shouldn't you gravel? shouldn't he gravel? shouldn't we gravel? shouldn't you gravel? shouldn't they gravel?	shouldn't I be gravelling? shouldn't you be gravelling? shouldn't he be gravelling? shouldn't we be gravelling? shouldn't you be gravelling? shouldn't they be gravelling?
Perfect	V-ing perfect
shouldn't I have gravelled? shouldn't you have gravelled? shouldn't he have gravelled? shouldn't we have gravelled? shouldn't you have gravelled? shouldn't they have gravelled?	shouldn't I have been gravelling? shouldn't you have been gravelling? shouldn't he have been gravelling? shouldn't we have been gravelling? shouldn't you have been gravelling? shouldn't they have been gravelling?