Second conditional in indirect speech

When we report second conditionals, the following changes may occur:

Future time

Catherine: If I lost my job, I would be in serious trouble. (referring to a possible future situation)
Catherine said that if she lost her job, she would be in serious trouble. (the reported words are true; she might still lose her job)
Catherine said that if she had lost her job, she would have been in serious trouble. (the reported words are out-of-date; it's not possible that she will lose her job)

Present time

Paul: If I knew the answer, I'd tell you. (referring to an unreal present situation)
Paul said that if he knew the answer, he'd tell us.