Task: Program Execution
Input (English): 1, ['s', '2999', 'u', '271', 'o', '2839', 'K', '6303', 'W', '6649', '6115', '6881', 'P', '6499', 'R', '4819', 'p', '7787', '2455', '5431', '6621', '3001', 'x', 'u']
Output (English): 2999, u, 271, o, 2839, K, 6303, W, 6649, 6115, 6881, P, 6499, R, 4819, p, 7787, 2455, 5431, 6621, 3001, x, u