I should tweak you should tweak she should tweak we should tweak you should tweak they should tweak
V-ing form
I should be tweaking you should be tweaking she should be tweaking we should be tweaking you should be tweaking they should be tweaking
Perfect
I should have tweaked you should have tweaked she should have tweaked we should have tweaked you should have tweaked they should have tweaked
V-ing perfect
I should have been tweaking you should have been tweaking she should have been tweaking we should have been tweaking you should have been tweaking they should have been tweaking
Negation
Simple form
I should not tweak you should not tweak she should not tweak we should not tweak you should not tweak they should not tweak
V-ing form
I should not be tweaking you should not be tweaking she should not be tweaking we should not be tweaking you should not be tweaking they should not be tweaking
Perfect
I should not have tweaked you should not have tweaked she should not have tweaked we should not have tweaked you should not have tweaked they should not have tweaked
V-ing perfect
I should not have been tweaking you should not have been tweaking she should not have been tweaking we should not have been tweaking you should not have been tweaking they should not have been tweaking
Interrogative form
Simple form
should I tweak? should you tweak? should she tweak? should we tweak? should you tweak? should they tweak?
V-ing form
should I be tweaking? should you be tweaking? should she be tweaking? should we be tweaking? should you be tweaking? should they be tweaking?
Perfect
should I have tweaked? should you have tweaked? should she have tweaked? should we have tweaked? should you have tweaked? should they have tweaked?
V-ing perfect
should I have been tweaking? should you have been tweaking? should she have been tweaking? should we have been tweaking? should you have been tweaking? should they have been tweaking?
Interro-negative form
Simple form
should I not tweak? should you not tweak? should she not tweak? should we not tweak? should you not tweak? should they not tweak?
V-ing form
should I not be tweaking? should you not be tweaking? should she not be tweaking? should we not be tweaking? should you not be tweaking? should they not be tweaking?
Perfect
should I not have tweaked? should you not have tweaked? should she not have tweaked? should we not have tweaked? should you not have tweaked? should they not have tweaked?
V-ing perfect
should I not have been tweaking? should you not have been tweaking? should she not have been tweaking? should we not have been tweaking? should you not have been tweaking? should they not have been tweaking?