I'd be cluttering you'd be cluttering he'd be cluttering we'd be cluttering you'd be cluttering they'd be cluttering
Perfect
I should've cluttered you should've cluttered he should've cluttered we should've cluttered you should've cluttered they should've cluttered
V-ing perfect
I should've been cluttering you should've been cluttering he should've been cluttering we should've been cluttering you should've been cluttering they should've been cluttering
Negation
Simple form
I shouldn't clutter you shouldn't clutter he shouldn't clutter we shouldn't clutter you shouldn't clutter they shouldn't clutter
V-ing form
I shouldn't be cluttering you shouldn't be cluttering he shouldn't be cluttering we shouldn't be cluttering you shouldn't be cluttering they shouldn't be cluttering
Perfect
I shouldn't have cluttered you shouldn't have cluttered he shouldn't have cluttered we shouldn't have cluttered you shouldn't have cluttered they shouldn't have cluttered
V-ing perfect
I shouldn't have been cluttering you shouldn't have been cluttering he shouldn't have been cluttering we shouldn't have been cluttering you shouldn't have been cluttering they shouldn't have been cluttering
Interrogative form
Simple form
should I clutter? should you clutter? should he clutter? should we clutter? should you clutter? should they clutter?
V-ing form
should I be cluttering? should you be cluttering? should he be cluttering? should we be cluttering? should you be cluttering? should they be cluttering?
Perfect
should I have cluttered? should you have cluttered? should he have cluttered? should we have cluttered? should you have cluttered? should they have cluttered?
V-ing perfect
should I have been cluttering? should you have been cluttering? should he have been cluttering? should we have been cluttering? should you have been cluttering? should they have been cluttering?
Interro-negative form
Simple form
shouldn't I clutter? shouldn't you clutter? shouldn't he clutter? shouldn't we clutter? shouldn't you clutter? shouldn't they clutter?
V-ing form
shouldn't I be cluttering? shouldn't you be cluttering? shouldn't he be cluttering? shouldn't we be cluttering? shouldn't you be cluttering? shouldn't they be cluttering?
Perfect
shouldn't I have cluttered? shouldn't you have cluttered? shouldn't he have cluttered? shouldn't we have cluttered? shouldn't you have cluttered? shouldn't they have cluttered?
V-ing perfect
shouldn't I have been cluttering? shouldn't you have been cluttering? shouldn't he have been cluttering? shouldn't we have been cluttering? shouldn't you have been cluttering? shouldn't they have been cluttering?