040000 tree 9a3b47d88e596682553db579d06bc6a0e206f5bb	algorithms
040000 tree 13b0c66bbcb0ff8b880dd98e0247603fb7939f65	containers
040000 tree bde43aff91940eb8f2cceeaf82d06bc0f227dabc	filesystem
040000 tree 423cee7b81dcc28a25c20b423a5f32dcdf4860d4	language.support
040000 tree aa6cbe92310f8da0b8e08e58e9f9be2543896c3d	memory
040000 tree ba668f7e6c091e79b6f3c11619d1c59a39161e76	utilities