I should spring you should spring he should spring we should spring you should spring they should spring
V-ing form
I should be springing you should be springing he should be springing we should be springing you should be springing they should be springing
Perfect
I should have sprung you should have sprung he 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 he 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 he 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 he 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 he 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 he 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 he spring? should we spring? should you spring? should they spring?
V-ing form
should I be springing? should you be springing? should he be springing? should we be springing? should you be springing? should they be springing?
Perfect
should I have sprung? should you have sprung? should he 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 he 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 he 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 he 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 he 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 he not have been springing? should we not have been springing? should you not have been springing? should they not have been springing?