040000 tree dd91acc561a796c53c4b2dcd9034bb4e16a2d7c3	file.streams
040000 tree d6b7657edd69b0eb7658da123179d14b309e3176	filesystems
040000 tree 7cc3c2d47168df992c679049aba5055aa71cfcd6	iostream.format
040000 tree d5b1e2293dd563f81c93555fddb9105c5af52125	iostream.forward
040000 tree 1874692382f71f65a4d0486d6f786688007963f7	iostream.objects
040000 tree f7c63399199318065950ef7a2e340fa1faf99fab	iostreams.base
040000 tree dc4981419b39f39a1563cc1b2f67b9e3ac790219	stream.buffers
040000 tree b927c8a04dabd589f5a1c44d52ffbad7763bdca3	string.streams