import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

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

public class Recycle
{
  public static void main(String[] args)
  {
    Scanner in = new Scanner(new BufferedInputStream(System.in));
    int T = in.nextInt();
    for(int i=0; i <T;i++)
    {
      int A = in.nextInt();
      int B = in.nextInt();
      
      int x = A;
      int digits = 1;
      while(x >=10)
      {
        x = x/10;
        digits++;
      }
      //System.out.println("digits: " + digits);
      int sum = 0;
      int[] m = new int[digits-1];
      for(int k = 0; k < m.length; k++)
        m[k] = (k+1)*-1;
      
      for(int j = A; j < B; j++) 
      {
        //reset m 
        for(int k = 0; k < m.length; k++)
          m[k] = (k+1)*-1;
        
        //try every possible combination
        //count it if j < combo < B
        for(int k = 1; k < digits; k++)
        {
          int divisor = (int) Math.pow(10,k);
          int multiplier = (int)Math.pow(10,digits-k);
          int temp = (j%divisor)*multiplier + j/divisor;
          
          //if all digits the same skip
          String number = Integer.toString(temp);
          if(number.matches("^([0-9])\\1*$")) continue;
          
          if(temp > j && temp <= B) 
          {
            m[k-1] = temp;
            sum++;
          }
        }
        //if redundancy subtract
        Arrays.sort(m);
        for(int k = 1; k < m.length; k++)
          if(m[k] == m[k-1]) sum--;
      }
      System.out.printf("Case #%d: %d\n",i+1,sum);
    }
  }
}