I'd be sowing you'd be sowing she'd be sowing we'd be sowing you'd be sowing they'd be sowing
Perfect
I should've sown, sowed you should've sown, sowed she should've sown, sowed we should've sown, sowed you should've sown, sowed they should've sown, sowed
V-ing perfect
I should've been sowing you should've been sowing she should've been sowing we should've been sowing you should've been sowing they should've been sowing
Negation
Simple form
I shouldn't sow you shouldn't sow she shouldn't sow we shouldn't sow you shouldn't sow they shouldn't sow
V-ing form
I shouldn't be sowing you shouldn't be sowing she shouldn't be sowing we shouldn't be sowing you shouldn't be sowing they shouldn't be sowing
Perfect
I shouldn't have sown, sowed you shouldn't have sown, sowed she shouldn't have sown, sowed we shouldn't have sown, sowed you shouldn't have sown, sowed they shouldn't have sown, sowed
V-ing perfect
I shouldn't have been sowing you shouldn't have been sowing she shouldn't have been sowing we shouldn't have been sowing you shouldn't have been sowing they shouldn't have been sowing
Interrogative form
Simple form
should I sow? should you sow? should she sow? should we sow? should you sow? should they sow?
V-ing form
should I be sowing? should you be sowing? should she be sowing? should we be sowing? should you be sowing? should they be sowing?
Perfect
should I have sown, sowed? should you have sown, sowed? should she have sown, sowed? should we have sown, sowed? should you have sown, sowed? should they have sown, sowed?
V-ing perfect
should I have been sowing? should you have been sowing? should she have been sowing? should we have been sowing? should you have been sowing? should they have been sowing?
Interro-negative form
Simple form
shouldn't I sow? shouldn't you sow? shouldn't she sow? shouldn't we sow? shouldn't you sow? shouldn't they sow?
V-ing form
shouldn't I be sowing? shouldn't you be sowing? shouldn't she be sowing? shouldn't we be sowing? shouldn't you be sowing? shouldn't they be sowing?
Perfect
shouldn't I have sown, sowed? shouldn't you have sown, sowed? shouldn't she have sown, sowed? shouldn't we have sown, sowed? shouldn't you have sown, sowed? shouldn't they have sown, sowed?
V-ing perfect
shouldn't I have been sowing? shouldn't you have been sowing? shouldn't she have been sowing? shouldn't we have been sowing? shouldn't you have been sowing? shouldn't they have been sowing?