040000 tree f89ce1e39018f702ea3fdd01214e2849653ae0cb	P1
100644 blob 56b6ef419c71ffa796632269905679e98d25aea8	lib1.c
100644 blob 377d0c484fdb0426b08e23238c32f692f79286a3	lib11.c
100644 blob bc9651eea5f82e21c63b5c26f8538a48459c74fe	lib2.c
100644 blob a39b683d8c1039d4e27a73299047724bfef1ebfd	lib21.c
100644 blob 8e6565022e7892aea8a18ac4dc1e71c6a580e4d9	lib22.c
100644 blob a1330920849bbfb94cbbe71039e9231d6aef5f1d	makefile