Task: Program Execution
Input (English): 7751, H, M, 7491, 6757, 2949, V, f, G, 4131, F, Q, 5885, Z, 8415, r, T, 1081, z, 2663, 3565, T, k
Output (English): H, M, V, f, G, F, Q, Z, r, T, z, T, k