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.
 */


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

/**
 *
 * @author harit
 */
public class Main {

    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int t = Integer.parseInt(br.readLine());
        int t1 = 1;
        int a, b;
        int count = 0;
        while (t1 <= t) {
            String s[] = br.readLine().split(" ");
            a = Integer.parseInt(s[0]);
            b = Integer.parseInt(s[1]);
            count=0;
            for (int i = a; i < b; i++) {
                List<Integer> lstR = getRnum(i);
                for (Integer j : lstR) {
                    if (j >= i && j <= b) {
                        count++;
                    }
                }

            }
            System.out.println("Case #"+ t1 + ": " + count);
            t1++;
        }

    }

    public static List<Integer> getRnum(int a) {
        List<Integer> lstRnum = new ArrayList<Integer>();
        String s = "" + a;
        int l = s.length();
        int modf = 10;
        int multf = (int) Math.pow(10, l - 1);
        int i = 1;
        boolean flag=true;
        while (i < l) {
            // System.out.println("modf "+modf);
            int x = ((a % modf) * multf) + a / modf;
            if (("" + x).length() == l && x!=a) {
                for(int xx:lstRnum){ if(xx==x) flag=false;}
                if(flag){
                    lstRnum.add(x);
                    
                }
                
            }
            modf = modf * 10;
            multf = multf / 10;
            i++;
        }

        return lstRnum;
    }
}
