8시47분에구로급행있고,7시7분,11분,15분,21분,26분,34분,40분,45분,48분,51분,56분,8시0분,3분,8분,13분,16분,21분,29분,35분,39분,42분,53분,53분용산급행있음
당신은 어느 그룹입니까?