040000 tree fc08d3c856671157c79ff66d05e19b48795292ff	bbr
040000 tree c2c002cf923f85cfdc639d88f9a10d78bd863be9	bbsim
040000 tree f81a74d8ea514fe611b36c7e6430a279d10bdf5f	bbsimctl
040000 tree 2761acae7941172abbac4bbcea7363f43821f2ee	common