When it says "corner" it means there is a matched corner connected or that is the side the corner is on in a bar. Aa-Headlights on Right of 2x2 Block Ab-Headlights on Left of 2x2 Block Ga-Corner on Right of Edge and Headlights on Side of 1x2 Bar Gb-Corner on Right of Edge and Headlights in the Back Gc-Corner on Left of Edge and Headlights on Side of 1x2 Bar Gd-Corner on Left of Edge and Headlights in the Back Ja-Corner on Left of 2x2 Block Jb-Corner on Right of 2x2 Block Na-Corner on Right of Edge Nb-Corner on Left of Edge Ra-Corner on Left of 1x2 Bar Rb-Corner on Right of 1x2 Bar Ua-Opposite Edge on Left Ub-Opposite Edge on Right How to do it from 2 sides: • 2 Sided PLL Recognition Tutorial (Home Page)