import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.*;

/**
 * @author rohitkg
 */
public class Task implements Runnable {
    private static final String TASK_ID = "C-large";
    private static final String IN_FILE = TASK_ID + ".in";
    private static final String OUT_FILE = TASK_ID + ".out";

    private Scanner in;
    private PrintWriter out;
    int n,i,t,A,B;
    
    int res;
   

    private void init() {
        try {
            in = new Scanner(new File(IN_FILE));
        } catch (FileNotFoundException ignored) {}
        try {
            out = new PrintWriter(OUT_FILE);
        } catch (FileNotFoundException ignored) {}
        
        n = in.nextInt();
    }

    private void read() {
        A=in.nextInt();
        B=in.nextInt();
    }

    private void solve() {
		res=0;
		
		if(A<10)
			return;
			
		HashSet<String> set=new HashSet<String>();	
		
		for(int i=A;i<=B;i++){
			String num ="" + i;
			int length=num.length();
			for(int pos=1;pos<=length;pos++){
				String recNum=num.substring(pos) + num.substring(0,pos);
				int recInt=Integer.parseInt(recNum);
				if(recInt>i && recInt<= B){
					//res++;
					
					if(!(set.contains(i + ", " +recInt) || set.contains(recInt + ", " + i))){
						set.add(i + ", " +recInt);
					}
					//	System.out.println(i + ", " +recInt);
					//else
							
					
					//out.println("Pairs : " + i + ", " + recInt);
				}
					
			}	
		}       
			
		res=set.size();	
    }

    private void write() {
        out.println("Case #" + t + ": " + res);
    }

    public void run() {
        init();
        for (t = 1; t <= n; t++) {
            read();
            solve();
            write();
        }
        out.close();
    }
    public static void main(String[] args) {
        new Thread(new Task()).start();
    }
}
