while true do
  local n = io.read("*n")
  if(n == 0) then break
  elseif(n == 1) then print("y")
  elseif(n == 2) then print("u")
  elseif(n == 3) then print("k")
  elseif(n == 4) then print("i")
  elseif(n == 5) then print("c")
  elseif(n == 6) then print("o")
  elseif(n == 7) then print("d")
  elseif(n == 8) then print("e")
  elseif(n == 9) then print("r")
  end
end