Ge Baek
Ge Baek is one of the older Chang Hon patterns, and appears to be inspired mostly by Chinto/Gankaku: it moves along the North/South line, contains frequent 180 degree turns, and faces to the sides only in a sitting stance to perform a few techniques. It also uses techniques found in Chinte.
The following videos were used as reference:
ITF Legacy performance of Ge Baek.
Unnamed student at Choi Hong Hi seminar performing Ge Baek.
Hirokazu Kanazawa performing Gankaku, Chinte, Bassai-Dai (Shotokan).
Ge Baek does not contain as many borrowed sequences when compared with other Chang Hon patterns, but it is moreso the structure and flow that resembles Gankaku.
Ge Baek opens the same as Gankaku: a slide backwards into a back stance X knife hand checking block.
After some blocks and punches, Ge Baek rises to one foot, Gankaku does a handful of times.
"Gankaku" translates as "crane on a rock," and it is this position that gave it its name (see: confusing note on "Rohai")
Ge Baek continues for a few more movements before two spear hands, placing one hand on the other, then executing a kick, pulling the hands back. Performing two of the same hand techniques, ending with one on top of the other, resembles a sequence in Chinte. The pulling kick resembles the one in Bassai, seen previously in Hwa Rang.
The hand position is difficult to see, and not everyone performs Ge Baek this way. However, in this blurry old video of a seminar with Choi Hong Hi himself, the performer can be seen doing two spear hands, then putting the hands on top of one another.
Regardless of its link here, the knuckle fist sequence of Chinte could have inspired the use of the upward knuckle fist later in Ge Baek.
Ge Baek follows this with a series of steps moving forward, turning 180 degrees on each one. This closely resembles another sequence of Gankaku, though in the opposite direction.
Ge Baek then turns to the side in a sitting stance, performing a 9 shape block.
Gankaku follows the above with a turn to the side, drops to a low X block, then into a sitting stance with a block.
After a few more turns, Ge Baek jumps forward into a block in an X stance. This closely resembles the opening movement of Bassai-Dai, though Ul Ji will reuse this in a manner much closer to the original. It is a fairly common movement, and it appears in other Chang Hon and Karate patterns.
A few movements later, Ge Baek (shown here from the side) returns to the side in a sitting stance, delivering two low section knife hand blocks, then stepping into another side sitting stance with a W shape block.
This resembles another section of Chinte, which turns to the side in the same stance, does the first two blocks, then slides into a wedging block that somewhat resembles the hand position of the W shape block. Ge Baek's stomping W shape blocks, seen previously in Toi Gye, come from Jitte.
This section of Ge Baek is performed differently in different schools. The video above performs the low knife hand blocks straight, but it is not uncommon to see them done in a circular motion closer to Kanazawa's Chinte. Neither the Encyclopedia nor the 1965 book specify.
After another turn and some kicks, blocks, and punches, Ge Baek does one final punch before turning 180 into an elbow.
Gankaku also contains a punch that turns into a 180 elbow, though performed vertically.