The "lines" of the form are an I-shape. You start by moving to the left, then back to the right. Then up the middle. Then to the right, and back to the left. Then back down the middle. There is also an advanced variation (see below) of this form called Geicho Hyung Il Bu Sang Gup that is used in Chun Kuk Do. The Kicho Hyeong forms are generally attributed to Hwang Kee and were originally developed in 1947.