040000 tree 8f9865878c6a95ec2d99e776c5ad67030bc89335	echoserver
040000 tree 14b3aa2f121f63c5604d6b9c325c9df23413d53e	httpserver
040000 tree 7fb1b1c5ed2bf2242ab7305eeafbfdda40cf54fc	netcat
040000 tree 11f8e61544f26a6e2fc39dfa51f6a30e06013561	reverser
040000 tree 807cdebc8fca5a1a7c95f6e06ea13169587e5349	sumup
040000 tree d488ad9ddba6bd7cd9635ed3110b4ed9517769f2	tennis