Task: Program Execution
Input (English): VtRYVNkMCyGiMsXZUlILFnIqnjZ, KsEsqGtUNaPtbMsXZUlILFnIqnnHPJeGCK
Output (English): a, b, c, e, f, g, h, i, j, k, l, m, n, p, q, s, t, u, x, z