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 gcj2012.qual;

import java.io.File;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;

/**
 *
 * @author scbit
 */
public class P3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception {
        new P3().run();
    }
    PrintWriter pw;

    void run() throws Exception {
        File infile = new File("C-large.in");
        String outfile = "result";
        pw = new PrintWriter(outfile);
        int N = 0;
        //BufferedReader br=new BufferedReader(new FileReader(infile));
        //N=Integer.parseInt(br.readLine());
        Scanner sc = new Scanner(infile);
        N = sc.nextInt();

        for (int case_i = 1; case_i <= N; case_i++) {
            int result = 0;
            int A=sc.nextInt();
            int B=sc.nextInt();
            for(int n=A;n<=B;n++){
                int d=calcnum(n);
                int m=n;
                for(int i=1;i<d;i++){
                    int gewei=m%10;
                    m=m/10;
                   
                    if(gewei==0) continue;
                    for(int ii=1;ii<d;ii++){
                        gewei=gewei*10;
                    }
                    m=m+gewei;
                    if(m==n) break;
                    if(m>n && m <=B) result++;
                }
            }
            
            
            
            pw.printf("Case #%d: %s\n", case_i, result);
            System.out.printf("Case #%d: %s\n", case_i, result);
        }
        pw.close();
    }
    int calcnum(int num){
        int t=num;
        int c=0;
        
        while(t>0){
            t=t/10;
            c++;
        }
        return c;
        
    }
}
