040000 tree 117ead538bd30be1601cab04607a80c53151ccab	canExtract
040000 tree 36abc9166d8fcbeebc3d401640f38934a0bf2834	canExtract17
040000 tree 831b9db90194c1a3e08f732c703dc198c601a7c7	canExtract18
040000 tree 43b38237835a1bd4545481c45b597532dab84c0b	cannotExtract
040000 tree 7b7cdf2a3f1cbfc2b698f8132a8645cd3df38b60	cannotExtract17
040000 tree 1e079c74510cb9a6a5c53d5611d1cd4ccc9a531d	cannotExtract18