let () = Scanf.scanf "%d %d\n" @@ fun h w ->
  let r = ref 0 in
  let c = ref 0 in
  for i = 0 to h - 1 do
    for j = 0 to w - 1 do
      Scanf.scanf "%s " @@ fun s ->
        if s = "snuke" then begin
          r := j;
          c := i
        end
    done
  done;
  Printf.printf "%c%d\n" (Char.chr (Char.code 'A' + !r)) (!c + 1)
