Task: Program Execution
Input (English): 4693, e, 8199, b, q, i, f, 7163, 3431, u, 2495, 4183, x, 9499, 3203, 8689, b, 2371, 9663, 6465, p, 2755
Output (English): b, e, f, i, p, q, u, x