040000 tree f7b423b9ea1a6da51c5182f8091ff4e3bab66c11	concepts
040000 tree c00f648d015c115dadee7838d62fc33515c8c221	format
040000 tree 9b7256cc461c07910f022663a8c794d38522828b	ranges
040000 tree 3813934e34ae20d4a12417dfe37012c3ccf83ecd	text_encoding
040000 tree fc178450ff7aa26d9a529cbb7619f73cfd8bbbac	time