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);
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam12;

import java.io.*;
import java.util.StringTokenizer;

/**
 *
 * @author Mohamed Ibrahim (MIM)
 */
public class Problem_C {

    public static String strSet(String str, char c, int index) {
        return str.substring(0, index) + c + str.substring(index + 1);
    }

    public static void main(String[] args) throws IOException {

        BufferedReader r = new BufferedReader(new FileReader("C-large.in"));
        PrintWriter w = new PrintWriter(new BufferedWriter(new FileWriter("C-large.out")));

        int nCases = Integer.parseInt(r.readLine());

        for (Integer k = 1; k <= nCases; k++) {
            w.print("Case #" + k + ": ");
            String line = r.readLine();
            StringTokenizer st = new StringTokenizer(line);
            int n = Integer.parseInt(st.nextToken());
            int m = Integer.parseInt(st.nextToken());
            int ret = 0;
            for (int i = n; i <= m; i++) {
                String val = String.valueOf(i);
                char z = val.charAt(val.length() - 1);
                String cur = val.substring(0, val.length() - 1);
                cur = z + cur;
                while (!val.equals(cur)) {
                    if (Integer.parseInt(cur) <= m && cur.charAt(0) != '0'
                            && Integer.parseInt(val) < Integer.parseInt(cur)) {
                        ret++;
                        //System.out.println(val + " " + cur + " " + m);
                    }
                    z = cur.charAt(val.length() - 1);
                    cur = cur.substring(0, val.length() - 1);
                    cur = z + cur;
                }
            }
        //    System.out.println();
        //    System.out.println();
            w.println(ret);
        }
        w.close();


    }
}
