Ignition coil question

I forgot to mark the wires to my ignition coils when I took my bike apart!

Does anyone know an easy way to tell which wires go to which coil?

 

blue and yellow go to the top coil.

 

which one goes to the top the blue or the yellow?

 

black and white wire with the blue go to the top. black and white wire with yellow goes to bottom coil. here's a wiring diagram.