https://twitter.com/yang0067/status/1648310196702437380?s=46&t=21Z-uJMKElVHNnMBphmG0Q 기차처럼 앞 뒤로만 움직인대 ㄱㅇㄱㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ