040000 tree 68ef2af39a2420eb61237c7961a355926e9d4bed	beans
040000 tree 28320275bb343f634671aa22214a64a095d9652d	io
040000 tree 007566098022b0cb765a33a2d9f2744fbf28ea92	lang
040000 tree f5d59241287165d19d05db5b31c16c166f5996ea	math
040000 tree 98d8008f379088105abb18b644366f871bcab44f	nio
040000 tree 3fc4adb555a2341332693a2174d35b1606963c8d	security
040000 tree 1316f98abe6fabeec1088cbcb613022e6520cd5a	sql
040000 tree f3a8f269e34f50e91f3dac6eb72e7069b7b2e7e1	text
040000 tree 8e92f6fdca30ecddfd8f4421b7ca3af6a401c069	util