What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?What is the 24 hour rule for Lufthansa?
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