Task: Program Execution
Input (English): ctJCYesRRKpXaSCTrzpUzJqRFVAaHvNxai, OJxBVggfCRAXaSCTrzpUzJqRFRlSWOmo
Output (English): a, c, e, f, h, i, j, k, n, p, q, r, s, t, u, v, x, y, z