Task: Program Execution
Input (English): k z 969 I X V 3753 l 1777 4969 r 3923 s 3223 A 4139 v Z M 4385 c O 3499 2853 2447 m l a s I
Output (English): 969, 3753, 1777, 4969, 3923, 3223, 4139, 4385, 3499, 2853, 2447