I should spring you should spring she should spring we should spring you should spring they should spring
V-ing form
I should be springing you should be springing she should be springing we should be springing you should be springing they should be springing
Perfect
I should have sprung you should have sprung she should have sprung we should have sprung you should have sprung they should have sprung
V-ing perfect
I should have been springing you should have been springing she should have been springing we should have been springing you should have been springing they should have been springing
Negation
Simple form
I should not spring you should not spring she should not spring we should not spring you should not spring they should not spring
V-ing form
I should not be springing you should not be springing she should not be springing we should not be springing you should not be springing they should not be springing
Perfect
I should not have sprung you should not have sprung she should not have sprung we should not have sprung you should not have sprung they should not have sprung
V-ing perfect
I should not have been springing you should not have been springing she should not have been springing we should not have been springing you should not have been springing they should not have been springing
Interrogative form
Simple form
should I spring? should you spring? should she spring? should we spring? should you spring? should they spring?
V-ing form
should I be springing? should you be springing? should she be springing? should we be springing? should you be springing? should they be springing?
Perfect
should I have sprung? should you have sprung? should she have sprung? should we have sprung? should you have sprung? should they have sprung?
V-ing perfect
should I have been springing? should you have been springing? should she have been springing? should we have been springing? should you have been springing? should they have been springing?
Interro-negative form
Simple form
should I not spring? should you not spring? should she not spring? should we not spring? should you not spring? should they not spring?
V-ing form
should I not be springing? should you not be springing? should she not be springing? should we not be springing? should you not be springing? should they not be springing?
Perfect
should I not have sprung? should you not have sprung? should she not have sprung? should we not have sprung? should you not have sprung? should they not have sprung?
V-ing perfect
should I not have been springing? should you not have been springing? should she not have been springing? should we not have been springing? should you not have been springing? should they not have been springing?