遺跡

遗 = 贵 + 辶 : Sometimes, just inside the space station's entrance (Ø2), Maud Younger (y) woefully thinks of her lost (遗) treasure chest (贵). It was filled to the top with gladiator sandals (辶); but it was too heavy to bring to the space station, so she had to leave it behind.

迹 = 亦 + 辶 : Joan of Arc (ji) is caring for the also-ran (亦) after she finished a marathon in the space station's bathroom (Ø4). The also-ran was wearing gladiator sandals (辶) but already after half of the race they were worn through, and Joan of Arc can see the footprints (迹) the also-ran left with her bare feet when she came in.