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);
		}

	}
}

package taskc;

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

public class TaskC {
    
    private long[] tenPowers = new long[10];
    private long[]prevPairs = new long[10];
    private void prepareTenPowers(){
        tenPowers[0] = 1;
        for(int i = 1;i<10;i++){
            tenPowers[i]=tenPowers[i-1]*10;
        }
    }
    
    private void solve(Scanner in, PrintWriter out, int caseNum){
        long res = 0;
        long A = in.nextInt();
        int B = in.nextInt();
        for(long t = A;t<=B;t++){
            long d = t;
            int aPow = 0;
            while(d>0){
                aPow++;
                d = d/10;
            }
            long pow = 10;
            d = t/10;
            int k = 1;
            int pairsCnt = 0;
            
            while(d>0){
                long rest = t%pow;
                if(rest!=0){
                    long pair = rest*tenPowers[aPow-k]+ d;
                    if((pair>t)&&(pair<=B)){
                        boolean ok = true;
                        check:
                        for(int i = 0;i<pairsCnt;i++){
                            if(prevPairs[i]==pair){
                                ok = false;
                                break check;
                            }
                        }
                        if(ok){
                          //System.out.println(t + " " + pair);
                            res++;
                            prevPairs[pairsCnt] = pair;
                            pairsCnt++;
                        }
                    }
                }
                k++;
                pow*=10;
                d /=10;
            }
        }
        out.format("Case #%d: %s\n", caseNum, res);
    }

    public TaskC(){
        prepareTenPowers();
        try{
            Scanner in = new Scanner(new File("C-large.in"));
            int T = in.nextInt();
            PrintWriter out = new PrintWriter("Clarge.out");
            for(int i = 0;i<T;i++){
                solve(in,out,i+1);
            }
            out.close();
        } catch (FileNotFoundException e){
            System.out.println("File not found");
        }
        
    }
    public static void main(String[] args) {
        TaskC instance = new TaskC();
    }
}
