preferred_name: Maintains head vertically while upright and maintains control for 15-45 degrees of backward movement, head in midline.
preferred_name_lc: maintains head vertically while upright and maintains control for 15-45 degrees of backward movement, head in midline.
label: Maintains head vertically while upright and maintains control for 15-45 degrees of backward movement, head in midline.
label_lc: maintains head vertically while upright and maintains control for 15-45 degrees of backward movement, head in midline.