I should countersink you should countersink he should countersink we should countersink you should countersink they should countersink
V-ing form
I should be countersinking you should be countersinking he should be countersinking we should be countersinking you should be countersinking they should be countersinking
Perfect
I should have countersunk you should have countersunk he should have countersunk we should have countersunk you should have countersunk they should have countersunk
V-ing perfect
I should have been countersinking you should have been countersinking he should have been countersinking we should have been countersinking you should have been countersinking they should have been countersinking
Negation
Simple form
I should not countersink you should not countersink he should not countersink we should not countersink you should not countersink they should not countersink
V-ing form
I should not be countersinking you should not be countersinking he should not be countersinking we should not be countersinking you should not be countersinking they should not be countersinking
Perfect
I should not have countersunk you should not have countersunk he should not have countersunk we should not have countersunk you should not have countersunk they should not have countersunk
V-ing perfect
I should not have been countersinking you should not have been countersinking he should not have been countersinking we should not have been countersinking you should not have been countersinking they should not have been countersinking
Interrogative form
Simple form
should I countersink? should you countersink? should he countersink? should we countersink? should you countersink? should they countersink?
V-ing form
should I be countersinking? should you be countersinking? should he be countersinking? should we be countersinking? should you be countersinking? should they be countersinking?
Perfect
should I have countersunk? should you have countersunk? should he have countersunk? should we have countersunk? should you have countersunk? should they have countersunk?
V-ing perfect
should I have been countersinking? should you have been countersinking? should he have been countersinking? should we have been countersinking? should you have been countersinking? should they have been countersinking?
Interro-negative form
Simple form
should I not countersink? should you not countersink? should he not countersink? should we not countersink? should you not countersink? should they not countersink?
V-ing form
should I not be countersinking? should you not be countersinking? should he not be countersinking? should we not be countersinking? should you not be countersinking? should they not be countersinking?
Perfect
should I not have countersunk? should you not have countersunk? should he not have countersunk? should we not have countersunk? should you not have countersunk? should they not have countersunk?
V-ing perfect
should I not have been countersinking? should you not have been countersinking? should he not have been countersinking? should we not have been countersinking? should you not have been countersinking? should they not have been countersinking?