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Job 3:1 -42:6 is poetry that consists of a cycle of speeches between Job, Eliphaz, Bildad, Zophar and later Elihu, and then the dialogue between Yahweh and Job.
The names of his friends are Eliphaz, Bildad, and Zophar. Towards the end of the book, Job's friends start to think that Job is not good because a lot of bad things are happening to him.