040000 tree c178ac196daa225bc374889ba8573a238aecb02f	bbr
040000 tree 82a6d43bf273741ff0a5409ed44a93be5fe51aed	bbsim
040000 tree 929ffdc2aa93e802487fcccff86d0200c68a804b	bbsimctl
040000 tree 69c79de31fdc592818fb228e5092d2a28da8a67d	common