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.InputStreamReader;
import java.io.IOException;

import java.util.List;
import java.util.ArrayList;


public class Rec{
    static int rotate(int n, int l){
        int pot = (int)Math.pow(10,l-1);
        int ld = (int)Math.floor(n/pot);
        int cd = n-ld*pot;
        int ans = cd*10+ld;
        return ans;
    }
    
    static String bw(String a, int n){
        String ans = "";
        for(int i=n;i<a.length();i++)
            ans = ans + a.charAt(i);
        String ans2="";
        for(int i=0;i<a.length()-ans.length();i++)
            ans2 = ans2+a.charAt(i);
            
        System.out.println(a+"->"+ans+ans2);
        return ans+ans2;
    }

    public static int recnum(int a, int b){
        int[] test = new int[b-a+1];
        int ans = 0;
        int l=String.valueOf(a).length();

        for(int i=a;i<=b;i++){
            int c = i;
            List<Integer> reps = new ArrayList<Integer>();
            for(int j=1;j<l;j++){
                c=rotate(c,l);
                if(c<=b && c>i && String.valueOf(c).length()==l && c!=i && !reps.contains(c)){
                    ans++;
                    reps.add(c);
                    //System.out.println("("+String.valueOf(i)+","+String.valueOf(c)+")"); 
                }
            }
        }
        
        return ans;
    }

    public static void main(String[] args) throws IOException{
      BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
      String ttt = "";
      int n = Integer.parseInt(stdin.readLine());
      int i = 1;

      while (i<=n){
        ttt = stdin.readLine();
        String[] AB = ttt.split(" ");
        int a = Integer.parseInt(AB[0]);
        int b = Integer.parseInt(AB[1]);        
        System.out.println("Case #"+String.valueOf(i++)+": "+String.valueOf(recnum(a,b)));
      }

      stdin.close();

    }
}

