What Is The Correct Spark Plug Firing Order?

Volvo penta 4 cylinder AQ130 d firing order

1 5 3 6 2 4 is the firing order for a 4.0 jeep engine.

What is the correct firing order for 1995 chevy s-10 blazer

95 chevrolet tahoe

V6 3.3 liters

4 cylinder mercedes benze 190e [1985]

For dodge 360

Someone put  spark plugs and wires in but did it all wrong and I am looking for the right firing order