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I'm by no means an expert on reading plugs but: Number 1 looks like it's been in there since the dawn of time!! Water in the spark plug well maybe? Number 2 is fouled, prolly coolant. Head gasket leak maybe?
The others have a relatively good face so the combustion is ok. Nevertheless there seems to have been blow-by on all except Number 2. Did you torque them right or maybe you're running extreme boost?
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