I should skitter you should skitter she should skitter we should skitter you should skitter they should skitter
V-ing form
I should be skittering you should be skittering she should be skittering we should be skittering you should be skittering they should be skittering
Perfect
I should have skittered you should have skittered she should have skittered we should have skittered you should have skittered they should have skittered
V-ing perfect
I should have been skittering you should have been skittering she should have been skittering we should have been skittering you should have been skittering they should have been skittering
Negation
Simple form
I should not skitter you should not skitter she should not skitter we should not skitter you should not skitter they should not skitter
V-ing form
I should not be skittering you should not be skittering she should not be skittering we should not be skittering you should not be skittering they should not be skittering
Perfect
I should not have skittered you should not have skittered she should not have skittered we should not have skittered you should not have skittered they should not have skittered
V-ing perfect
I should not have been skittering you should not have been skittering she should not have been skittering we should not have been skittering you should not have been skittering they should not have been skittering
Interrogative form
Simple form
should I skitter? should you skitter? should she skitter? should we skitter? should you skitter? should they skitter?
V-ing form
should I be skittering? should you be skittering? should she be skittering? should we be skittering? should you be skittering? should they be skittering?
Perfect
should I have skittered? should you have skittered? should she 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 she have been skittering? should we have been skittering? should you have been skittering? should they have been skittering?
Interro-negative form
Simple form
should I not skitter? should you not skitter? should she not skitter? should we not skitter? should you not skitter? should they not skitter?
V-ing form
should I not be skittering? should you not be skittering? should she not be skittering? should we not be skittering? should you not be skittering? should they not be skittering?
Perfect
should I not have skittered? should you not have skittered? should she not have skittered? should we not have skittered? should you not have skittered? should they not have skittered?
V-ing perfect
should I not have been skittering? should you not have been skittering? should she not have been skittering? should we not have been skittering? should you not have been skittering? should they not have been skittering?