040000 tree c0482bbdf1dbc3f8c7362f6f57b7934fbcca91c9	Chapter2
040000 tree dacce4a1dff9df579d7aa04a00dfeb338a9c8623	Chapter3
040000 tree 821c6f25b403eb3f5efd73271cf501e80a27e370	Chapter4
040000 tree bf86b245cf2c97dd68b6c1dbe1e403bdda438208	Chapter5
040000 tree e130c007b5db26dfb8b16f8a2b87e634c456ceb0	Chapter6
040000 tree 1ac11a1fcd1f7cda8d59e0abacf133c35794820b	Chapter7
100644 blob bd0c252c2c03e16ad13839d60fda14bc0f299e0e	Makefile