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.*;
import java.lang.Integer;


public class QuestionC
{

    public static void main(String[] args) throws IOException
    {

        Scanner inPut = new Scanner(new File("C-large.in"));
        FileWriter fWriter = new FileWriter("C-large.out");
        int caseTotal = inPut.nextInt();
        inPut.nextLine();
        for (int caseNum = 1; caseNum <= caseTotal; caseNum++)
        {

            // read the string length for this case
            int base = 1;
            int smallNum = inPut.nextInt();
            int largeNum = inPut.nextInt();
            int digit = 0;
            int temp = smallNum;
            while(temp != 0)
            {
                temp = temp/10;
                digit++;
            }
            int[] num = new int[digit];
            int total = 0;

            for (int i = 1; i < digit; i++)
            {
                base = base * 10;
            }
            fWriter.write("Case #" + caseNum + ": ");
            for(int i = largeNum; i >= smallNum; i--)
            {
                num[0] = i;

                for (int j = 1; j < digit; j++)
                {
                    boolean norepeat = false;
                    num[j] = num[j - 1] / base + (num[j - 1] % base) * 10;

                    if (num[j] >= smallNum && num[j] <= largeNum)
                    {
                        norepeat = true;
                        for (int k = j - 1; k >= 0; k--)
                        {
                            norepeat = norepeat && (num[j] != num[k]);
                        }
                    }
                    if(norepeat) total++;
                }
            }
            total = total / 2;
            fWriter.write(total + "\n");
        }
        fWriter.flush();
        fWriter.close();
    }
}
