I'd be crossing you'd be crossing he'd be crossing we'd be crossing you'd be crossing they'd be crossing
Perfect
I should've crossed you should've crossed he should've crossed we should've crossed you should've crossed they should've crossed
V-ing perfect
I should've been crossing you should've been crossing he should've been crossing we should've been crossing you should've been crossing they should've been crossing
Negation
Simple form
I shouldn't cross you shouldn't cross he shouldn't cross we shouldn't cross you shouldn't cross they shouldn't cross
V-ing form
I shouldn't be crossing you shouldn't be crossing he shouldn't be crossing we shouldn't be crossing you shouldn't be crossing they shouldn't be crossing
Perfect
I shouldn't have crossed you shouldn't have crossed he shouldn't have crossed we shouldn't have crossed you shouldn't have crossed they shouldn't have crossed
V-ing perfect
I shouldn't have been crossing you shouldn't have been crossing he shouldn't have been crossing we shouldn't have been crossing you shouldn't have been crossing they shouldn't have been crossing
Interrogative form
Simple form
should I cross? should you cross? should he cross? should we cross? should you cross? should they cross?
V-ing form
should I be crossing? should you be crossing? should he be crossing? should we be crossing? should you be crossing? should they be crossing?
Perfect
should I have crossed? should you have crossed? should he have crossed? should we have crossed? should you have crossed? should they have crossed?
V-ing perfect
should I have been crossing? should you have been crossing? should he have been crossing? should we have been crossing? should you have been crossing? should they have been crossing?
Interro-negative form
Simple form
shouldn't I cross? shouldn't you cross? shouldn't he cross? shouldn't we cross? shouldn't you cross? shouldn't they cross?
V-ing form
shouldn't I be crossing? shouldn't you be crossing? shouldn't he be crossing? shouldn't we be crossing? shouldn't you be crossing? shouldn't they be crossing?
Perfect
shouldn't I have crossed? shouldn't you have crossed? shouldn't he have crossed? shouldn't we have crossed? shouldn't you have crossed? shouldn't they have crossed?
V-ing perfect
shouldn't I have been crossing? shouldn't you have been crossing? shouldn't he have been crossing? shouldn't we have been crossing? shouldn't you have been crossing? shouldn't they have been crossing?