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