Task: Program Execution
Input (English): LlrhTowKTmPNrKrTKNQyYzdtugChBGo, UYwiSmcQWnwKTmPNrKrTKNQHDk
Output (English): b, c, d, g, h, k, l, m, n, o, p, q, r, t, u, w, y, z