XiaNaphryz
LATIN, MATRIPEDICABUS, DO YOU SPEAK IT
You can hold down on the orb to see the path it will take.
He means what direction the orbs will drop after the path is cleared.
There is definitely a pattern to it, but it's not always intuitive and is different from column to column. Eventually you will figure out the whole "if I get a blank space in this column, the orb from the upper left will drop into it" type stuff if you pay attention.