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040000 tree 280a263b74a8778206ffa3d5cf9a9a62698c8fbe	common
040000 tree 12e17c709e692abb9c5f080084088504bfa76865	example
040000 tree 76894579565a746c29c520668c69d56618e298ba	ruby
040000 tree cd574cb1a466142c0431fb0a665d73d341d4e1e8	splash2
040000 tree 7bcc175b1a85e8174cf49335b74e3a6f241e46a3	topologies