I should trip you should trip he should trip we should trip you should trip they should trip
V-ing form
I should be tripping you should be tripping he should be tripping we should be tripping you should be tripping they should be tripping
Perfect
I should have tripped you should have tripped he should have tripped we should have tripped you should have tripped they should have tripped
V-ing perfect
I should have been tripping you should have been tripping he should have been tripping we should have been tripping you should have been tripping they should have been tripping
Negation
Simple form
I should not trip you should not trip he should not trip we should not trip you should not trip they should not trip
V-ing form
I should not be tripping you should not be tripping he should not be tripping we should not be tripping you should not be tripping they should not be tripping
Perfect
I should not have tripped you should not have tripped he should not have tripped we should not have tripped you should not have tripped they should not have tripped
V-ing perfect
I should not have been tripping you should not have been tripping he should not have been tripping we should not have been tripping you should not have been tripping they should not 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
should I not trip? should you not trip? should he not trip? should we not trip? should you not trip? should they not trip?
V-ing form
should I not be tripping? should you not be tripping? should he not be tripping? should we not be tripping? should you not be tripping? should they not be tripping?
Perfect
should I not have tripped? should you not have tripped? should he not have tripped? should we not have tripped? should you not have tripped? should they not have tripped?
V-ing perfect
should I not have been tripping? should you not have been tripping? should he not have been tripping? should we not have been tripping? should you not have been tripping? should they not have been tripping?