Use case: stylized-concept. Draw FOUR genuinely DIFFERENT sequential walk-cycle keyframes in ONE HORIZONTAL ROW on transparent background. This is a production pixel-art animation, all four sprites face SOUTH directly toward the viewer. Same Surly in every frame: adult woman, short mousy-brown cropped hair, dusky blue-grey skin, small eyes, plain salt-grey robe, two brown boots. Use attached portrait ONLY for her identity. More realistically proportioned upright 54px-tall game sprite, head 13px tall, not chibi. Pixel clusters readable after export to 48x64. Frame1: SCREEN-LEFT boot is planted closest to camera, SCREEN-RIGHT boot lifted behind; SCREEN-RIGHT forearm swings toward camera. Frame2: both legs nearly parallel under torso, SCREEN-RIGHT knee passing the other leg, both hands beside hips. Frame3: SCREEN-RIGHT boot planted closest to camera, SCREEN-LEFT boot lifted behind; SCREEN-LEFT forearm swings toward camera. Frame4: both legs nearly parallel, SCREEN-LEFT knee passing; both hands beside hips. Keep arms and lower legs fully visible. Robe hem separates to reveal both knees/boots, with opposite folds frames1/3. Frames1/3 must have opposite leading boots; frame2/4 must have narrow leg spacing. Keep EXACTLY same head/torso scale and camera. No duplicate poses, no extra rows, no text, no ground shadow. Transparent background.