040000 tree 2cc77b86dcf7c2a002324db1f867270bb31f5fa4	deep-inheritence
040000 tree 4f792cce8e1a5fcc98a2fcd51d0a2212e9c29ff8	sibling-dependency
040000 tree afac18d1490f43adda10bc80ba97161420939b21	simple-inheritence