I should distinguish you should distinguish he should distinguish we should distinguish you should distinguish they should distinguish
V-ing form
I should be distinguishing you should be distinguishing he should be distinguishing we should be distinguishing you should be distinguishing they should be distinguishing
Perfect
I should have distinguished you should have distinguished he should have distinguished we should have distinguished you should have distinguished they should have distinguished
V-ing perfect
I should have been distinguishing you should have been distinguishing he should have been distinguishing we should have been distinguishing you should have been distinguishing they should have been distinguishing
Negation
Simple form
I should not distinguish you should not distinguish he should not distinguish we should not distinguish you should not distinguish they should not distinguish
V-ing form
I should not be distinguishing you should not be distinguishing he should not be distinguishing we should not be distinguishing you should not be distinguishing they should not be distinguishing
Perfect
I should not have distinguished you should not have distinguished he should not have distinguished we should not have distinguished you should not have distinguished they should not have distinguished
V-ing perfect
I should not have been distinguishing you should not have been distinguishing he should not have been distinguishing we should not have been distinguishing you should not have been distinguishing they should not have been distinguishing
Interrogative form
Simple form
should I distinguish? should you distinguish? should he distinguish? should we distinguish? should you distinguish? should they distinguish?
V-ing form
should I be distinguishing? should you be distinguishing? should he be distinguishing? should we be distinguishing? should you be distinguishing? should they be distinguishing?
Perfect
should I have distinguished? should you have distinguished? should he have distinguished? should we have distinguished? should you have distinguished? should they have distinguished?
V-ing perfect
should I have been distinguishing? should you have been distinguishing? should he have been distinguishing? should we have been distinguishing? should you have been distinguishing? should they have been distinguishing?
Interro-negative form
Simple form
should I not distinguish? should you not distinguish? should he not distinguish? should we not distinguish? should you not distinguish? should they not distinguish?
V-ing form
should I not be distinguishing? should you not be distinguishing? should he not be distinguishing? should we not be distinguishing? should you not be distinguishing? should they not be distinguishing?
Perfect
should I not have distinguished? should you not have distinguished? should he not have distinguished? should we not have distinguished? should you not have distinguished? should they not have distinguished?
V-ing perfect
should I not have been distinguishing? should you not have been distinguishing? should he not have been distinguishing? should we not have been distinguishing? should you not have been distinguishing? should they not have been distinguishing?