Task: Program Execution
Input (English): wtvTUVbhYVTRXmYMLrtQpElXSkvjlFHzzykXMCxNRkK, QNiSaYMQNXmrDhMLrtQpElXSkvjlFQk
Output (English): b, c, e, f, h, j, k, l, m, n, p, q, r, s, t, u, v, w, x, y, z