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