040000 tree 64f045a6cb256580a469d13bfe570bdde1c953af	Advanced
040000 tree f101bd9a0a263d7f953320f2c09b5d9d4f34ef2b	Beginner
040000 tree 0adfa1c87c940266f4e2fc77d63516d0066d4b6e	Intermediate