Student or Learner
In past conditional III, it is okay to have any combination? Had he been there, he could have saved them. (here, had is followed by could have). So for different contexts, can we use a different verb, such as shoud/would etc.?
Or, is 'had' only followed by 'would have'?
"Had he been there, he should have saved them."
"If he had been there, he might have saved them."
But you can't necessarily call these sentences examples of the 3rd conditional. That's not usually a problem though. If you are asked in an exam for a conditional sentence, use 'would'.