The subject line is a clue, but you’ll need to find where. Additional clue: look up. Or down, maybe.
I have to admit the answer isn’t very rewarding. Sorry about that; it’s more a proof of concept right now.
1333827A050448R07
2215210A525246R04
2431121B010024R02
3451848A592243R02
3011459B485802R06
2131036B532515R10
1040455A393616R06
Clues:
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Stars
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Positions
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First