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.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Arrays;
import java.util.HashSet;

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

/**
 *
 * @author Alex
 */
public class Recycle {
    private class Data {
        public int A;
        public int B;
        public HashSet<String> list;
        
        public Data(String s) {
            String[] parts = s.trim().split(" ");
            A = Integer.parseInt(parts[0]);
            B = Integer.parseInt(parts[1]);
            list = new HashSet<String>();
        }
        
        public Data(int n_) {
        
        }
        
        public int Solve() {
            list.clear();
            int sols = 0;
            for (int i=A;i<=B;i++) {
                sols += permutate(i);
                //sols += countPerms(i);
            }
            //System.out.println(sols);
            if (sols != list.size())
                System.err.println("WTF");
            return list.size();
        }
        
        public int permutate(int i) {
            int count = 0;
            int c = i;
            int length = (int)(Math.log10(i)+1);
            int power = length-1;
            //System.out.println("Length: "+length);
            for (int h=0;h<power;h++) {
                int ones = c%10;
                int rest = c/10;
                //System.out.println("ones: "+ones);
                //System.out.println("rest: "+rest);
                c = (int)((c%10)*Math.pow(10,power)) + c/10;
                if (ones != 0 && !(""+c).replaceAll(""+ones, "").equals("") && c <= B && c > i && i >= A) {
                    count++;
                    //System.out.println(""+i+": "+c);
                    //System.out.println("Counts");
                    list.add(""+i+""+c);
                }
            }
            //System.out.println(list.size());
            return count;
        }
    }
    
    private static String IN = ".\\C-large.in";
    private static String OUT = ".\\C-large.out";
    
    private Data[] datas;
    
    private void go() {
        File file = new File(IN);
        System.out.println(file.getAbsolutePath());
        File fo = new File(OUT);
        try {
            if (!fo.createNewFile()) {
                fo.delete();
                fo.createNewFile();
            }
            BufferedReader br = new BufferedReader(new FileReader(file));
            BufferedWriter bw = new BufferedWriter(new FileWriter(fo));
            String line;
            int num = Integer.parseInt(br.readLine());
            datas = new Data[num];
            int i = 0;
            while ((line = br.readLine()) != null && num-->0) {
                datas[i] = new Data(line);
                int solv = datas[i].Solve();
                String ss = "Case #"+(i+1)+": "+solv+"\n";
                System.out.print(ss);
                bw.write(ss);
                i++;
            }
            br.close();
            bw.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    public Recycle() {
        go();
    }
    
    public static void main(String[] args) {
        new Recycle();
    }
}
