open System

let (h, w) = Console.ReadLine().Split() |> (fun x -> int x.[0], int x.[1])
for i in [0..h-1] do
    let ss= Console.ReadLine().Split()
    for j in [0..w-1] do
        if ss.[j] = "snuke" then Console.WriteLine("%c%d",(char ((int 'A') + j)), i) else ()
    done
done
