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.*;
import java.util.*;

public class Solution {
	public static void main(String args[]){
		try{
		FileInputStream fin=new FileInputStream("C:\\Program lang\\Google Code Jam\\input01.txt");
		DataInputStream datain=new DataInputStream(fin);
		
		BufferedReader br=new BufferedReader(new InputStreamReader(datain));
		File file = new File("C:\\Program lang\\Google Code Jam\\output01.txt");
		
		BufferedWriter bw=new BufferedWriter(new FileWriter(file));
		
		int T=Integer.parseInt(br.readLine());
		for(int j=0;j<T;j++){
			StringTokenizer st=new StringTokenizer(br.readLine());
			String sA=st.nextToken();
			String sB=st.nextToken();
			int A=Integer.parseInt(sA);
			int B=Integer.parseInt(sB);
			int l[]=new int[sA.length()];
			int u[]=new int[sB.length()];
			int count=0;
			for(int i=0;i<sA.length()-1;i++){
				l[i]=Integer.parseInt(sA.substring(i,i+1));
				u[i]=Integer.parseInt(sB.substring(i,i+1));
			}
			l[sA.length()-1]=Integer.parseInt(sA.substring(sA.length()-1));
			u[sB.length()-1]=Integer.parseInt(sB.substring(sB.length()-1));
			
			if(l.length==2){
				ArrayList<Integer> num=new ArrayList<Integer>();
				//ab
				for(int i=A;i<B+1;i++){
					if(!num.contains(i)){
						int unit=i%10;
						int tens=i/10;
						if(unit!=tens){
							int swap=unit*10+tens;
							if(A<=swap && swap<=B)	{
								num.add(swap);
								count++;	
							}
						}
					}
				}
				
			}
			else if(l.length==3){
					// abc
				ArrayList<Integer> num=new ArrayList<Integer>();
				// A is at 0th position
				// r is at r-A
				for(int i=A;i<B+1;i++){
					if(!num.contains(i)){
					String s1=Integer.toString(i);
					int p=Integer.parseInt(s1.substring(1)+s1.substring(0,1));  //bca
					int q=Integer.parseInt(s1.substring(2)+s1.substring(0,2));  //cab
					if(p==q){}
					else if(p>=A && p<=B){
						count++;
						num.add(p);
						if(q>=A && q<=B){
							count=count+2;
							num.add(q);
						}
					}
					else if(q>=A && q<=B)	{
						count++;
						num.add(q);
					}
				}
				}
			}
			bw.write("Case #"+(j+1)+": "+count);
			bw.newLine();
		}
		bw.close();
		}catch(Exception e){
			System.out.println(e);
		}
	}

}

