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