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import java.util.*;

public class Main {

	public static void main(String[] args) {
		Scanner scn = new Scanner(System.in);
		int n = Integer.parseInt(scn.nextLine());
		for (int c = 1; c <= n; c++) {
			String str = scn.nextLine();
			StringTokenizer st = new StringTokenizer(str, "0123456789");//使用StringTokenizer將數字拆開
			StringTokenizer st2 = new StringTokenizer(str, "ABCDEFGHIJKLMNOPQRSTUVWXYZ");//使用StringTokenizer將英文拆開
			String arr[] = new String[st.countTokens()], ary[] = new String[st2.countTokens()];//arr儲存英文字串 ary儲存次數
			int i = 0;
			while (st.hasMoreTokens()) {    //hasMoreTokens()讀出並存入陣列
				arr[i] = String.valueOf(st.nextToken());
				ary[i++] = String.valueOf(st2.nextToken());
			}
			System.out.printf("Case %d: ", c);
			for (i = 0; i < arr.length; i++) {
				for (int j = Integer.parseInt(ary[i]); j > 0; j--) {//印出該次數字母
					System.out.print(arr[i]);
				}
			}
			System.out.println();
		}
	}
		/* 
    題目：Q11541: Decoding
    作者：1010
    時間：西元 2016 年 7 月 */
}