040000 tree 68ef2af39a2420eb61237c7961a355926e9d4bed	beans
040000 tree eb34227fee371ab01758d37f012a7158b1fe86f3	io
040000 tree d218aae83dd9bdf91c40b507006540534752ce89	lang
040000 tree d37c22a5a86903246b7e4dffacf825bfe7cacb13	math
040000 tree 72f870f61d0f7ba928d68e685548fa30ebbf1b34	nio
040000 tree 3fc4adb555a2341332693a2174d35b1606963c8d	security
040000 tree 1316f98abe6fabeec1088cbcb613022e6520cd5a	sql
040000 tree f3a8f269e34f50e91f3dac6eb72e7069b7b2e7e1	text
040000 tree af164b19df44380258073a6a3ea7333e07fefda1	util