I should attain you should attain he should attain we should attain you should attain they should attain
V-ing form
I should be attaining you should be attaining he should be attaining we should be attaining you should be attaining they should be attaining
Perfect
I should have attained you should have attained he should have attained we should have attained you should have attained they should have attained
V-ing perfect
I should have been attaining you should have been attaining he should have been attaining we should have been attaining you should have been attaining they should have been attaining
Negation
Simple form
I should not attain you should not attain he should not attain we should not attain you should not attain they should not attain
V-ing form
I should not be attaining you should not be attaining he should not be attaining we should not be attaining you should not be attaining they should not be attaining
Perfect
I should not have attained you should not have attained he should not have attained we should not have attained you should not have attained they should not have attained
V-ing perfect
I should not have been attaining you should not have been attaining he should not have been attaining we should not have been attaining you should not have been attaining they should not have been attaining
Interrogative form
Simple form
should I attain? should you attain? should he attain? should we attain? should you attain? should they attain?
V-ing form
should I be attaining? should you be attaining? should he be attaining? should we be attaining? should you be attaining? should they be attaining?
Perfect
should I have attained? should you have attained? should he have attained? should we have attained? should you have attained? should they have attained?
V-ing perfect
should I have been attaining? should you have been attaining? should he have been attaining? should we have been attaining? should you have been attaining? should they have been attaining?
Interro-negative form
Simple form
should I not attain? should you not attain? should he not attain? should we not attain? should you not attain? should they not attain?
V-ing form
should I not be attaining? should you not be attaining? should he not be attaining? should we not be attaining? should you not be attaining? should they not be attaining?
Perfect
should I not have attained? should you not have attained? should he not have attained? should we not have attained? should you not have attained? should they not have attained?
V-ing perfect
should I not have been attaining? should you not have been attaining? should he not have been attaining? should we not have been attaining? should you not have been attaining? should they not have been attaining?