I should countercheck you should countercheck he should countercheck we should countercheck you should countercheck they should countercheck
V-ing form
I should be counterchecking you should be counterchecking he should be counterchecking we should be counterchecking you should be counterchecking they should be counterchecking
Perfect
I should have counterchecked you should have counterchecked he should have counterchecked we should have counterchecked you should have counterchecked they should have counterchecked
V-ing perfect
I should have been counterchecking you should have been counterchecking he should have been counterchecking we should have been counterchecking you should have been counterchecking they should have been counterchecking
Negation
Simple form
I should not countercheck you should not countercheck he should not countercheck we should not countercheck you should not countercheck they should not countercheck
V-ing form
I should not be counterchecking you should not be counterchecking he should not be counterchecking we should not be counterchecking you should not be counterchecking they should not be counterchecking
Perfect
I should not have counterchecked you should not have counterchecked he should not have counterchecked we should not have counterchecked you should not have counterchecked they should not have counterchecked
V-ing perfect
I should not have been counterchecking you should not have been counterchecking he should not have been counterchecking we should not have been counterchecking you should not have been counterchecking they should not have been counterchecking
Interrogative form
Simple form
should I countercheck? should you countercheck? should he countercheck? should we countercheck? should you countercheck? should they countercheck?
V-ing form
should I be counterchecking? should you be counterchecking? should he be counterchecking? should we be counterchecking? should you be counterchecking? should they be counterchecking?
Perfect
should I have counterchecked? should you have counterchecked? should he have counterchecked? should we have counterchecked? should you have counterchecked? should they have counterchecked?
V-ing perfect
should I have been counterchecking? should you have been counterchecking? should he have been counterchecking? should we have been counterchecking? should you have been counterchecking? should they have been counterchecking?
Interro-negative form
Simple form
should I not countercheck? should you not countercheck? should he not countercheck? should we not countercheck? should you not countercheck? should they not countercheck?
V-ing form
should I not be counterchecking? should you not be counterchecking? should he not be counterchecking? should we not be counterchecking? should you not be counterchecking? should they not be counterchecking?
Perfect
should I not have counterchecked? should you not have counterchecked? should he not have counterchecked? should we not have counterchecked? should you not have counterchecked? should they not have counterchecked?
V-ing perfect
should I not have been counterchecking? should you not have been counterchecking? should he not have been counterchecking? should we not have been counterchecking? should you not have been counterchecking? should they not have been counterchecking?