import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.*;
import java.util.*;
public class Cre
{
 public static void main(String args[])throws FileNotFoundException,IOException
  {
      RandomAccessFile in=new RandomAccessFile("C-small-attempt0.in","r");
      FileOutputStream out= new  FileOutputStream("out.txt");
     int o=Integer.parseInt(in.readLine());
      int j=0;
     String str[]=new String[o+1];
     int res[]=new int[o];
     while((str[j]=in.readLine())!=null)
     {
       String []nos=str[j].split(" ");
       int a=Integer.parseInt(nos[0]);
       int b=Integer.parseInt(nos[1]);
       int []t=new int[b-a+1];
	    int m;
       for(int i=a,k=0;i<=b;i++,k++)t[k]=i;
       for(int i=0;i<t.length;i++)
       {
	     
		  
           String st=t[i]+"";
		   char ch[]=st.toCharArray();
		   ArrayList got=new ArrayList();
		   int g;
           for(int c=0;c<ch.length;c++)
		    { 
			   m=shift(ch);
			    int flag=1;
			   Iterator it=got.iterator();
			   while(it.hasNext())
			   {  
			    Integer inf=(Integer)it.next();
			     g=inf.intValue();
				 if(g==m) flag=0;
			   }
			   
			     if(m!=t[i]&&flag==1)
          {
		  got.add(m);
           for(int l=i+1;l<t.length;l++)
           {
              if(m==t[l])
              {
			     System.out.println(t[i]);
                    res[j]++;
                    
              }
           }
		   
          }
		  
            }
		  
       
		 
        }
      j++;
     }
     for(int i=0;i<o;i++)
    {
     out.write(("Case #"+(i+1)+": "+res[i]+"\n").getBytes());
    }
   }
   
   static int shift(char[] ch)
   {
     char temp=ch[ch.length-1];
     for(int i=ch.length-1;i>0;i--)
	  {
	    ch[i]=ch[i-1];
	  }
	  ch[0]=temp;
	  String st=new String(ch);
	  return Integer.parseInt(st);
   }

}