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100644 blob e092d8648bf5b48fdcb2e131fa149d6c3a5e8fe9	chapter1.txt
100644 blob c838aa93b4ca1c603e76cc33a77bad6e2cd7b920	chapter2.txt
100644 blob 20a5e1247775abf14252c1c64a73d50f7e0108c5	chapter3.txt
100644 blob bde83d0bee81bf8a59c3904d09b4cb37bda32e23	chapter4.txt
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100755 blob d087e845c1661e87329ab57b8d29f0bc290a38da	qtn_latex.sh