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