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