import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}


import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
    private Scanner in;
    private PrintWriter out;
    public long output;
    public int A;
    public int B;
    /**
     * main method
     */
    public static void main(String args[]){
        new RecycledNumbers("C-small-attempt0.in");
    }
    
    /**
     * constructor
     */
    public RecycledNumbers(String filename){
        initIO(filename);
        
        int n = in.nextInt();
//    	long tmStart = System.currentTimeMillis();
        
        for(int i=1;i<=n;i++){
            A = in.nextInt();
            B = in.nextInt();
            output = 0;
            output=solve();
            out.println("Case #"+i+": "+output);
        }
//        System.out.println(System.currentTimeMillis() - tmStart);
        
       closeIO();
    }
    public long solve(){
    	long op=0;
		Set<Integer> s = new HashSet<Integer>();
    	for(int i=A;i<=B;i++){
    		String stringI = Integer.toString(i);
    		s.clear();
    		for(int ind=stringI.length()-1;ind>0;ind--){
    			if(stringI.substring(ind).charAt(0)!= '0'){
    				String stringTemp = stringI.substring(ind) + stringI.substring(0, ind);
    				if(Integer.parseInt(stringTemp) > i && Integer.parseInt(stringTemp)<=B){
//    					System.out.println(stringI + "  "+Integer.parseInt(stringTemp));
    					s.add(Integer.parseInt(stringTemp));
//    					op++;
    				}
    			}
    		}
    		op+=s.size();
    	}
    	return op;
    }
    
    /**
     * Set up devices to do I/O
     */
    public void initIO(String filename){
        try {
            in = new Scanner(new FileReader(filename));
            out = new PrintWriter(new FileWriter(filename+".out"));
        }catch (IOException except) {
            System.err.println("File is missing!");
        }
    }
    
    /**
     * Free memory used for I/O
     */
    public void closeIO(){
        in.close();
        out.close();
    }

   
}
