I should labour you should labour he should labour we should labour you should labour they should labour
V-ing form
I should be labouring you should be labouring he should be labouring we should be labouring you should be labouring they should be labouring
Perfect
I should have laboured you should have laboured he should have laboured we should have laboured you should have laboured they should have laboured
V-ing perfect
I should have been labouring you should have been labouring he should have been labouring we should have been labouring you should have been labouring they should have been labouring
Negation
Simple form
I should not labour you should not labour he should not labour we should not labour you should not labour they should not labour
V-ing form
I should not be labouring you should not be labouring he should not be labouring we should not be labouring you should not be labouring they should not be labouring
Perfect
I should not have laboured you should not have laboured he should not have laboured we should not have laboured you should not have laboured they should not have laboured
V-ing perfect
I should not have been labouring you should not have been labouring he should not have been labouring we should not have been labouring you should not have been labouring they should not have been labouring
Interrogative form
Simple form
should I labour? should you labour? should he labour? should we labour? should you labour? should they labour?
V-ing form
should I be labouring? should you be labouring? should he be labouring? should we be labouring? should you be labouring? should they be labouring?
Perfect
should I have laboured? should you have laboured? should he have laboured? should we have laboured? should you have laboured? should they have laboured?
V-ing perfect
should I have been labouring? should you have been labouring? should he have been labouring? should we have been labouring? should you have been labouring? should they have been labouring?
Interro-negative form
Simple form
should I not labour? should you not labour? should he not labour? should we not labour? should you not labour? should they not labour?
V-ing form
should I not be labouring? should you not be labouring? should he not be labouring? should we not be labouring? should you not be labouring? should they not be labouring?
Perfect
should I not have laboured? should you not have laboured? should he not have laboured? should we not have laboured? should you not have laboured? should they not have laboured?
V-ing perfect
should I not have been labouring? should you not have been labouring? should he not have been labouring? should we not have been labouring? should you not have been labouring? should they not have been labouring?