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A few rare exceptions: Rav Oshia Beribi, Rabi Eliezer Hakefar Beribi found in Eruvin 53a, Avoda Zara 43a, Chullin 28a, 84b.
Abba Shaul, Abba Yosi.
Ayeh Mari – Gittin 35a
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These are not exeptions at all.
these names are compounds with more than one part. not two names.