import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;


public class main2 {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws NumberFormatException 
	 */
	public static void main(String[] args) throws NumberFormatException, IOException {
		// TODO Auto-generated method stub
		BufferedReader m = new BufferedReader(new InputStreamReader(System.in));
		PrintWriter ou = new PrintWriter("file.txt");
		int n = Integer.parseInt(m.readLine());
	
		for (int i = 0; i < n; i++) {
			String cas = m.readLine();
			String [] a = cas.split(" ");
			int base = Integer.parseInt(a[0]);
			int count = 0;
			int count1=0;
			if(a[0].length()==1){
				System.out.print("Case #"+(i+1)+": "+count);

				System.out.print("\n");
			}else{
				Boolean con = false;;
				int cass = Integer.parseInt(a[0]);
				do {
//					 con = false;;
//				String newcase = a[0].charAt(0)+"";
//				for(int j=0  ;j<a[0].length()-1;j++ ){
//					newcase +=a[0].charAt(0)+"";;
//				}
		
				do{
					
					count1 = count;
					
					String newcase = cass+"";
					if (cass <Integer.parseInt(a[1])){
						con = true;
						for (int j = 0; j < newcase.length()-1; j++) {
							newcase = (newcase+newcase.charAt(0));
							newcase = newcase.substring(1,newcase.length());
							int cassM = Integer.parseInt(newcase);
							if (base <= cass && cass < cassM && cassM<=Integer.parseInt(a[1]))
								count++;
						}
					}
					cass++;
				}while(count1 <count);
				
//					String tmp = cass+"";
//					int first = Integer.parseInt(tmp.charAt(0)+"");
//					first++;
//					tmp = first+""+tmp.substring(1,tmp.length());
//					a[0]=tmp;
				
				}while(cass <= Integer.parseInt(a[1]));
				System.out.print("Case #"+(i+1)+": "+count);

				System.out.print("\n");
			}
		}
	}

}
