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

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}


import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;


public class Principal {
	
	public static void main (String Args[]){
		boolean numeros[]= new boolean[2000000];
		Scanner input = new Scanner(System.in);
		File saida = new File("c:/saida.txt");
		BufferedWriter bw;
		
		int A, B, T;
		String entrada;
		String a,b;
		String search;
		int tamanho_string, teste;
		int resposta=0, temp=0;
		String texto="";
		
		
		entrada=input.nextLine();
		T= Integer.parseInt(entrada);

		
		for(int i=1;i<=T;i++){
			
			
			
			a = input.next();
			b = input.next();
			
			A = Integer.parseInt(a);
			B = Integer.parseInt(b);
			for(int j=A; j<=B; j++){
				if(numeros[j]){
					continue;
				}
				
				numeros[j]=true;
				search = ""+j+j;
				tamanho_string= a.length();
				
				for (int k=0;k<tamanho_string-1;k++){
					teste = Integer.parseInt(search.substring(k+1, k+tamanho_string+1));
					if(teste >j && teste <=B && !numeros[teste]){
						numeros[teste]=true;
						temp++;
					}
					
					
				}
				for(;temp>0;temp--)
					resposta+=temp;
				temp=0;
				
			}
			
			
			texto="Case #"+i+": "+resposta+"\n";
			
			try {
				bw=new BufferedWriter(new FileWriter(saida, true));
				bw.write(texto);
				bw.newLine();
				bw.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
			
			

			
			
			for(int asd=0;asd<2000000;asd++)
				numeros[asd]=false;
			temp=0;
			resposta=0;
			
		}

		
	}

}
