Jung Gum Hyung - (Straight Sword Form) The first sword form in Kuk Sool Won™, Jung Gum Hyung is based on straight sword techniques -- the first of the four types of sword principles taught in the Kuk Sool Won™ curriculum (the others being Inverted Sword, Double Short Sword and Double Long Sword). Before learning Jung Gum Hyung, the student must first study and practice proper sword etiquette, sword meditation and drawing and sheathing techniques.