040000 tree 1aa4387e199130f286a185da617542dc467ef1bc	bbr
040000 tree 991a6ebc561312a32e12be7084fccc685f9b98d1	bbsim
040000 tree dae819eaed5d941a44b0c16783a0c79cfe8bdfd9	bbsimctl
040000 tree 5876a8b263ca4deeb69526d7131dad299b3aad4a	common