040000 tree fc08d3c856671157c79ff66d05e19b48795292ff	bbr
040000 tree 40bcada7fd840354bb881e3b003910ccf4e46f9d	bbsim
040000 tree f81a74d8ea514fe611b36c7e6430a279d10bdf5f	bbsimctl
040000 tree 3909c82bad96466966927f888eaf381dfed0e93e	common