/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.*;
class Recycled
{
public static void main(String args[])throws IOException
{
BufferedReader x=new BufferedReader(new InputStreamReader(System.in));
int t=Integer.parseInt(x.readLine());
int c[]=new int[t];
for(int i=0;i<t;i++)
{
c[i]=0;
int a=0,b=0;
String q=x.readLine();
for(int j=0;j<q.length();j++)
if(q.charAt(j)==' ')
{
a=Integer.parseInt(q.substring(0,j));
b=Integer.parseInt(q.substring(j+1));
break;
}
for(int j=a;j<=b;j++)
{
String s=""+j;
int y;
do{
s=s.charAt(s.length()-1)+s.substring(0,s.length()-1);
y=Integer.parseInt(s);
if(y>j&&y<=b)
c[i]++;
}
while(y!=j);
}
}
for(int i=0;i<t;i++)
System.out.println("Case #"+(i+1)+": "+c[i]);
}}


