040000 tree 6039ee08f2d849aa4fae122d5b4605f87b6d3e05	bbr
040000 tree a4742a4428463e13fc242b94e72efc382ebccc5b	bbsim
040000 tree f7cb70202a09c305297f39cb33109ccde3ecb1b7	bbsimctl
040000 tree 5151093cc93954bea0cd0c9ba1929fd53f3c44f8	common