Task: Program Execution
Input (English): B, c, 69, c, 1925, L, 1619, s, D, N, 4253, b, z, 3297, 2421, Z, 1845, U, W, 8561, f, 6479, p
Output (English): 69, 1925, 1619, 4253, 3297, 2421, 1845, 8561, 6479