Task: Program Execution
Input (English): E, 2401, x, 7233, g, 8421, F, 1873, x, 6691, t, 4697, 4609, 1153, E, 8997, 4467, g, 6581, a, M, c, 9009
Output (English): E, x, g, F, x, t, E, g, a, M, c, 2401, 7233, 8421, 1873, 6691, 4697, 4609, 1153, 8997, 4467, 6581, 9009