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.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map.Entry;
import java.util.Scanner;

public class G_3 {

    static int a, b;
    static HashMap<String, Integer> map;

    static String change(int n) {
        String s = "" + n;
        int len = s.length();
        int min = Integer.MAX_VALUE;
        int value;
        // String best = null;
        for (int i = 0; i < len; i++) {
            s = s.charAt(len - 1) + s.substring(0, len - 1);
            value = Integer.parseInt(s);
            if (min > value) {
                min = value;
                // best = s;
            }
        }
        return "" + min;
    }

    public static void main(String[] args) throws IOException {
        PrintWriter bw = new PrintWriter(new FileWriter("1.txt"));
        Scanner scan = new Scanner(System.in);
        int T = scan.nextInt();
        map = new HashMap<String, Integer>();
        for (int i = 0; i < T; i++) {
            map.clear();
            a = scan.nextInt();
            b = scan.nextInt();
            for (int j = a; j <= b; ++j) {
                String str = change(j);
                // System.out.println(str);

                if (map.containsKey(str)) {
                    map.put(str, map.get(str) + 1);
                } else {
                    map.put(str, 1);
                }
            }
            long sum = 0;
            for (Entry<String, Integer> e : map.entrySet()) {
                int n = e.getValue();
                sum += n * (n - 1) / 2;
            }
            System.out.println(String.format("Case #%d: %d", (i + 1), sum));
            bw.write(String.format("Case #%d: %d\n", (i + 1), sum));
        }
        bw.flush();
        bw.close();
    }
}
