Task: Program Execution
Input (English): B, 7519, 5433, v, R, n, 9513, r, 3705, F, q, Y, P, a, 3335, 8293, 2713, 4911, C, V, 5679
Output (English): 2, 3, 7, 9, 15, 16, 17, 18, 21