Ancestors of Homo sapiens

In tracing the direct ancestors of Homo sapiens sapiens, which hominins would you include, and in what order? Note, your answer must make logical sense, and must include at least five hominins. For example, an essay that began with Homo habilis, then went on to Asustralopithecus afarensis, and then Homo erectus, and then Ardipithecus ramidus, and finally Homo sapiens would be wrong both temporally and logically.
Here is the link to ebook: (chapter 13) https://drive.google.com/file/d/0Bxyj3BvCcId-SDZDUlF6N0czQTg/view?pref=2&pli=1

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