Task: Program Execution
Input (English): e, 8511, t, x, a, 7281, 5981, m, 3099, y, g, Q, 5951, 3837, L, 8023, f, 9641, 8841, V, 6015, 7009
Output (English): 1, 3, 4, 5, 8, 10, 11, 12, 15, 17, 20