I should string you should string he should string we should string you should string they should string
V-ing form
I should be stringing you should be stringing he should be stringing we should be stringing you should be stringing they should be stringing
Perfect
I should have strung you should have strung he should have strung we should have strung you should have strung they should have strung
V-ing perfect
I should have been stringing you should have been stringing he should have been stringing we should have been stringing you should have been stringing they should have been stringing
Negation
Simple form
I should not string you should not string he should not string we should not string you should not string they should not string
V-ing form
I should not be stringing you should not be stringing he should not be stringing we should not be stringing you should not be stringing they should not be stringing
Perfect
I should not have strung you should not have strung he should not have strung we should not have strung you should not have strung they should not have strung
V-ing perfect
I should not have been stringing you should not have been stringing he should not have been stringing we should not have been stringing you should not have been stringing they should not have been stringing
Interrogative form
Simple form
should I string? should you string? should he string? should we string? should you string? should they string?
V-ing form
should I be stringing? should you be stringing? should he be stringing? should we be stringing? should you be stringing? should they be stringing?
Perfect
should I have strung? should you have strung? should he have strung? should we have strung? should you have strung? should they have strung?
V-ing perfect
should I have been stringing? should you have been stringing? should he have been stringing? should we have been stringing? should you have been stringing? should they have been stringing?
Interro-negative form
Simple form
should I not string? should you not string? should he not string? should we not string? should you not string? should they not string?
V-ing form
should I not be stringing? should you not be stringing? should he not be stringing? should we not be stringing? should you not be stringing? should they not be stringing?
Perfect
should I not have strung? should you not have strung? should he not have strung? should we not have strung? should you not have strung? should they not have strung?
V-ing perfect
should I not have been stringing? should you not have been stringing? should he not have been stringing? should we not have been stringing? should you not have been stringing? should they not have been stringing?