Originally Posted by laura*

I don't see any problems elsewhere - it looks like a 4 cross lacing on a 36 hole hub. It's not a mirror image pattern though.

Both marked spokes should have been just as hard or easy. Heads-in spokes are easy. Heads-out spokes are harder to weave through on a built wheel - they need to be curved to clear the next to final crossing of the other side's spokes.