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Something that happens again and again, like getting up in the morning and going to sleep at night; a template for needlework or other crafts, like a pattern for a zigzag edge; the stripes on someone’s shirt, which may alternate between two colors
The ceiling tiles are all rectangles, they just move across the room; the bricks in the wall aren’t always whole at the corner of the room, they alternate between whole and half each row; the mini-blinds are like small line segments, with space in between each one
Look for descriptions of the direction an object points, where the curves and line segments are, where new pieces are, or for missing or empty parts of a figure.
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