040000 tree 3acf3d993fcb305a293ce672f593b0afcac3289d	concepts
040000 tree 169809b7c271c43cc7a26fbc2095008d811ab73f	format
040000 tree dd6ed1e173f1f919f9b21f8507b3a15218be7c75	memory
040000 tree ffe57de7b4b37f906e02395580bcff4aa4c33e29	ranges
040000 tree 3813934e34ae20d4a12417dfe37012c3ccf83ecd	text_encoding
040000 tree 697665e6ebc1e58f65357fe9e521a3b4720b9d26	time