Are all six ignition coils the same? on 2006 Toyota Avalon

I need to purchace an ignition coil. I do not know which coil is bad. Are all six coils the same?

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2 answers
I'm not sure if they need to replace all coils. I had the same issue. They were able to pull the code to determin which coil was bad. $300 later the car runs great.
they are all the same