040000 tree 7e635c5d96553d44baf0d900e02c64375e686d37	area
040000 tree b894de5a7f77052799aa8f23d979cfc7f4e06b0d	impl
040000 tree 9792cfb41353ebe3f30947abc8ef5e9c0e051fc5	lsdb
040000 tree 59b287316add3f9c0900506e46aff290ac7743c9	util