040000 tree 880e59d9d25dca8219d2991571c2c7becabca006	area
040000 tree c3b04178b0ce35c6adc6e29e9b3ddfa28651629e	impl
040000 tree fc02c15d2378c677524dd54139e752d2a60f98ea	lsdb
040000 tree c93c0492bcd05d29c12c8b31e05d674a5889206e	util