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