import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.BufferedWriter;

public class D {
	public static void main(String[] args) throws IOException {
		int n;

		InputStreamReader reader = new InputStreamReader(new FileInputStream(
				args[0]));
		BufferedReader read = new BufferedReader(reader);
		BufferedWriter write = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(args[1])));

		// Scanner scan = new Scanner(System.in);
		n = Integer.parseInt(read.readLine());
		// n = scan.nextInt();
		for (int i = 0; i < n; i++) {
			String p = read.readLine();
			write.write("Case #" + (i + 1) + ": " + holy(p, read));
			write.newLine();
		}
		write.flush();
		write.close();
	}

	static int holy(String r, BufferedReader read) throws IOException {
	    String p = r;
        String s, temp, m;
        int a = 0;
        int b = 0;
        int panjang = 0;
        int result = 0;

        a = Integer.parseInt(p.substring(0, p.indexOf(" ")));
        b = Integer.parseInt(p.substring(p.indexOf(" ") + 1, p.length()));

        for (int i = a; i <= b; i++) {
            s = Integer.toString(i);
            panjang = s.length();
            for (int j = 1; j < panjang; j++) {
                temp = s.substring(0, j);
                m = s.substring(j, panjang) + temp;
                if (Integer.parseInt(m) == i) {
                } else 
                if (Integer.parseInt(m) <= b && Integer.parseInt(m) >= a) {
                    result++;
                }
            }
        }
        
        if ((result % 2) == 0) {
            result = result/2;
        } else
        if (result % 2 == 1) {
            result = result/2+1;
        }
        
        return result;
	}
}