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.util.*;
import java.io.*;

public class Recycle
{
  public static boolean sameNumbers(int n, int m, int length, int i)
  {
    
    char[] nArray = (n + "").toCharArray();
    char[] mArray = (m + "").toCharArray();
    for (int j = 0; j < length; j++)
    {
      //System.out.println(j + " " + i + " " + m + " " + mArray.length);
      if (Arrays.binarySearch(nArray, mArray[i]) == -1) return false;
      
    }

    return true;
  }
  public static boolean check(int n, int m, int a, int b, int i)
  {
    if (n > m) return false;
    else if (n == m) return false;
    else if (n < a) return false;
    else if (m > b) return false;
   // else if (!sameNumbers(n,m,(n + "").length(), i)) return false;
    // System.out.println(n + " " + m);
    return true;
  }
  public static void main (String []args) throws IOException
  {
    final String INPUT_FILE = "C-large.in";
    final String OUTPUT_FILE = "out3.out";
    
    BufferedReader input = new BufferedReader(new FileReader(INPUT_FILE));
    PrintWriter out = new PrintWriter(new FileWriter(OUTPUT_FILE));
    
    int repeats = Integer.parseInt(input.readLine());
    
    for (int j = 0; j < repeats; j++)
    {
      StringTokenizer g = new StringTokenizer(input.readLine());  
      
      int count = 0;
      int a = Integer.parseInt(g.nextToken());
      int b = Integer.parseInt(g.nextToken());
      int aLength =  (a + "").length();
      if (aLength == 1) out.println("Case #" + (j + 1) + ": 0");
      else 
      {
        int arrayCounter = 0;
        for (int k = a; k < b; k++)
        {
          for (int i = 1; i < aLength;i++)
          {
            String kString =  k + "";
            
            //System.out.println(a + " " + aLength + " " + i);
            
            String mString1 = kString.substring(i,aLength);
            String mString2 = kString.substring(0,i);
            
            //System.out.println(kString + " " + mString1 + " " + mString2);
            
            int m = Integer.parseInt(mString1 + mString2);
            
            if (check(k,m,a,b,i))
            {
              count++;
            }
          }
        }
        out.println("Case #" + (j + 1) + ": " + count);
      }
    }
    out.close();
    input.close();
  }
}