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040000 tree fb54355c7ce8896fb321bade5bc2775ca267270d	network-shuffle
040000 tree 8874facae7c983aaf182c07072ed663a67b2ff26	network-yarn
040000 tree 8ea71434f70cf46b089910c25e0854aa66bd1920	sketch
040000 tree 84d71e9d538e898b58d16db6d675a6b318461eae	tags
040000 tree b99d6433cdeec62242a902f1eac232ce186461e2	unsafe