95 e320 ..

So I was taking the plugs out and noticed that 3 were Bosch green and 3 were Bosch blue. Resistor and non resistor. I didn’t put those in. About 4 months ago I ad it in the shop for a cel and the mechanic musta swapped things around. Now after thinking about it sorta makes sense with my mismatched wires. I didn’t take note of where each was placed.question how do I figure out what spot needs a resistor plug and what spot doesn’t need one?

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1993 e300
1995 e320
1994 e320
2006 s500 4matic
2004 Jeep wj overland
2001 Ducati 748
2004 Honda shadow aero