040000 tree 5fcfdca072683d48da92443adf39024992614aa3	area
040000 tree 1f868a84c70fb8fbbf2c864711613a5bbb4beb63	impl
040000 tree ec59e8c84072a7e871301b80441a6b4c90a3b0e4	lsdb
040000 tree d49a2a2b52311aa50aa9b79751c5911628a66b85	util