I should stain you should stain she should stain we should stain you should stain they should stain
V-ing form
I should be staining you should be staining she should be staining we should be staining you should be staining they should be staining
Perfect
I should have stained you should have stained she should have stained we should have stained you should have stained they should have stained
V-ing perfect
I should have been staining you should have been staining she should have been staining we should have been staining you should have been staining they should have been staining
Negation
Simple form
I should not stain you should not stain she should not stain we should not stain you should not stain they should not stain
V-ing form
I should not be staining you should not be staining she should not be staining we should not be staining you should not be staining they should not be staining
Perfect
I should not have stained you should not have stained she should not have stained we should not have stained you should not have stained they should not have stained
V-ing perfect
I should not have been staining you should not have been staining she should not have been staining we should not have been staining you should not have been staining they should not have been staining
Interrogative form
Simple form
should I stain? should you stain? should she stain? should we stain? should you stain? should they stain?
V-ing form
should I be staining? should you be staining? should she be staining? should we be staining? should you be staining? should they be staining?
Perfect
should I have stained? should you have stained? should she have stained? should we have stained? should you have stained? should they have stained?
V-ing perfect
should I have been staining? should you have been staining? should she have been staining? should we have been staining? should you have been staining? should they have been staining?
Interro-negative form
Simple form
should I not stain? should you not stain? should she not stain? should we not stain? should you not stain? should they not stain?
V-ing form
should I not be staining? should you not be staining? should she not be staining? should we not be staining? should you not be staining? should they not be staining?
Perfect
should I not have stained? should you not have stained? should she not have stained? should we not have stained? should you not have stained? should they not have stained?
V-ing perfect
should I not have been staining? should you not have been staining? should she not have been staining? should we not have been staining? should you not have been staining? should they not have been staining?