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.io.FileInputStream;
import java.util.*;
import java.math.*;

public class Main {
    
    static int[] toDigits(int val) {
        int count = 1;
        int temp = val / 10;
        while (temp > 0) {
            count++;
            temp /= 10;
        }
        int[] arr = new int[count];
        temp = val;
        for (int i = 0; i < arr.length; i++) {
            arr[i] = temp % 10;
            temp /= 10;
        }
        return arr;
    }
    
    static int toInt(int[] digits) {
        int res = 0;
        int p = 1;
        for (int i = 0; i < digits.length; i++) {
            res += p * digits[i];
            p *= 10;
        }
        return res;
    }
    
    public static void main(String[] args) throws Exception{
        Scanner scan = new Scanner(System.in);
        //Scanner scan  = new Scanner(new FileInputStream("C:\\Users\\wd\\Desktop\\"));
        char[] map = "yhesocvxduiglbkrztnwjpfmaq".toCharArray();
        int taskCount = scan.nextInt();
        scan.nextLine();
        for (int taskIndex = 1; taskIndex <= taskCount; taskIndex++) {
            int A = scan.nextInt();
            int B = scan.nextInt();
            long result = 0;
            for (int i = A; i <= B; i++) {
                HashSet<Integer> checker = new HashSet<Integer>();
                int[] base = toDigits(i);
                int[] copy = new int[base.length];
                for (int j = 0; j < base.length; j++) {
                    int index = base.length - 1;
                    for (int k = j; k >= 0; k--) {
                        copy[index--] = base[k];
                    }
                    for (int k = base.length - 1; k > j; k--) {
                        copy[index--] = base[k];
                    }
                    int convert = toInt(copy);
                    if (convert <= i || convert > B || checker.contains(convert)) {
                        continue;
                    }
                    //System.out.println(i + " " + convert);
                    checker.add(convert);
                    result++;
                }
            }
            System.out.println("Case #" + taskIndex + ": " + result);
        }
    }
}