Task: Program Execution
Input (English): 2139, l, 7241, 1237, 1909, g, g, 703, 2539, r, x, 2171, i, Q, X
Output (English): l, g, g, r, x, i, Q, X, 2139, 7241, 1237, 1909, 703, 2539, 2171