I'd be telephoning you'd be telephoning she'd be telephoning we'd be telephoning you'd be telephoning they'd be telephoning
Perfect
I should've telephoned you should've telephoned she should've telephoned we should've telephoned you should've telephoned they should've telephoned
V-ing perfect
I should've been telephoning you should've been telephoning she should've been telephoning we should've been telephoning you should've been telephoning they should've been telephoning
Negation
Simple form
I shouldn't telephone you shouldn't telephone she shouldn't telephone we shouldn't telephone you shouldn't telephone they shouldn't telephone
V-ing form
I shouldn't be telephoning you shouldn't be telephoning she shouldn't be telephoning we shouldn't be telephoning you shouldn't be telephoning they shouldn't be telephoning
Perfect
I shouldn't have telephoned you shouldn't have telephoned she shouldn't have telephoned we shouldn't have telephoned you shouldn't have telephoned they shouldn't have telephoned
V-ing perfect
I shouldn't have been telephoning you shouldn't have been telephoning she shouldn't have been telephoning we shouldn't have been telephoning you shouldn't have been telephoning they shouldn't have been telephoning
Interrogative form
Simple form
should I telephone? should you telephone? should she telephone? should we telephone? should you telephone? should they telephone?
V-ing form
should I be telephoning? should you be telephoning? should she be telephoning? should we be telephoning? should you be telephoning? should they be telephoning?
Perfect
should I have telephoned? should you have telephoned? should she have telephoned? should we have telephoned? should you have telephoned? should they have telephoned?
V-ing perfect
should I have been telephoning? should you have been telephoning? should she have been telephoning? should we have been telephoning? should you have been telephoning? should they have been telephoning?
Interro-negative form
Simple form
shouldn't I telephone? shouldn't you telephone? shouldn't she telephone? shouldn't we telephone? shouldn't you telephone? shouldn't they telephone?
V-ing form
shouldn't I be telephoning? shouldn't you be telephoning? shouldn't she be telephoning? shouldn't we be telephoning? shouldn't you be telephoning? shouldn't they be telephoning?
Perfect
shouldn't I have telephoned? shouldn't you have telephoned? shouldn't she have telephoned? shouldn't we have telephoned? shouldn't you have telephoned? shouldn't they have telephoned?
V-ing perfect
shouldn't I have been telephoning? shouldn't you have been telephoning? shouldn't she have been telephoning? shouldn't we have been telephoning? shouldn't you have been telephoning? shouldn't they have been telephoning?