I should scrub you should scrub she should scrub we should scrub you should scrub they should scrub
V-ing form
I should be scrubbing you should be scrubbing she should be scrubbing we should be scrubbing you should be scrubbing they should be scrubbing
Perfect
I should have scrubbed you should have scrubbed she should have scrubbed we should have scrubbed you should have scrubbed they should have scrubbed
V-ing perfect
I should have been scrubbing you should have been scrubbing she should have been scrubbing we should have been scrubbing you should have been scrubbing they should have been scrubbing
Negation
Simple form
I should not scrub you should not scrub she should not scrub we should not scrub you should not scrub they should not scrub
V-ing form
I should not be scrubbing you should not be scrubbing she should not be scrubbing we should not be scrubbing you should not be scrubbing they should not be scrubbing
Perfect
I should not have scrubbed you should not have scrubbed she should not have scrubbed we should not have scrubbed you should not have scrubbed they should not have scrubbed
V-ing perfect
I should not have been scrubbing you should not have been scrubbing she should not have been scrubbing we should not have been scrubbing you should not have been scrubbing they should not have been scrubbing
Interrogative form
Simple form
should I scrub? should you scrub? should she scrub? should we scrub? should you scrub? should they scrub?
V-ing form
should I be scrubbing? should you be scrubbing? should she be scrubbing? should we be scrubbing? should you be scrubbing? should they be scrubbing?
Perfect
should I have scrubbed? should you have scrubbed? should she have scrubbed? should we have scrubbed? should you have scrubbed? should they have scrubbed?
V-ing perfect
should I have been scrubbing? should you have been scrubbing? should she have been scrubbing? should we have been scrubbing? should you have been scrubbing? should they have been scrubbing?
Interro-negative form
Simple form
should I not scrub? should you not scrub? should she not scrub? should we not scrub? should you not scrub? should they not scrub?
V-ing form
should I not be scrubbing? should you not be scrubbing? should she not be scrubbing? should we not be scrubbing? should you not be scrubbing? should they not be scrubbing?
Perfect
should I not have scrubbed? should you not have scrubbed? should she not have scrubbed? should we not have scrubbed? should you not have scrubbed? should they not have scrubbed?
V-ing perfect
should I not have been scrubbing? should you not have been scrubbing? should she not have been scrubbing? should we not have been scrubbing? should you not have been scrubbing? should they not have been scrubbing?