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Test Cases:
D1i.OSH.MM.001: Sign up and pay for an Osher membership alone.
D1i.OSH.MM.002:
Requirement D1i.OSH.CR: A student wants to register for an Osher course.
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...
Test Cases:
D1i.OSH.MM.001: Sign up and pay for an Osher membership alone.
D1i.OSH.MM.002:
Requirement D1i.OSH.CR: A student wants to register for an Osher course.
...