import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.*;
import java.security.SecureRandom;
import java.util.*;
import java.math.*;
import java.awt.geom.*;

import static java.lang.Math.*;

public class Solution implements Runnable {
    
	    
	
	int solve(int a, int b) {
		
		HashSet<Long> set = new HashSet<>();
		
		for (int i = a; i < b; ++ i) {
			StringBuilder s = new StringBuilder(Integer.toString(i));
			for (int j = 1;j < s.length(); ++ j) {
				if (s.charAt(j) == '0') {
					continue;
				}
				int x = 0;
				for (int k = j; k < s.length(); ++ k) {
					x = 10 * x + s.charAt(k) - '0';
				}
				for (int k = 0; k < j; ++ k) {
					x = 10 * x + s.charAt(k) - '0';
				}
				if (x > i && x <= b) {
					set.add(i * 10000000l + x);
				}
			}
		}
		
		return set.size();
	}
	
	public void solve() throws Exception {
		int t = sc.nextInt();
		for (int i = 0;i < t; ++ i) {
			out.println("Case #" + (i + 1) + ": " + solve(sc.nextInt(), sc.nextInt()));
		}
    }
    
    
    
    
    /*--------------------------------------------------------------*/
    
    static String filename = "";
    static boolean fromFile = false;
    
    BufferedReader in;
    PrintWriter out;
    FastScanner sc;
    
    public static void main(String[] args) {
        new Thread(null, new Solution(), "", 1 << 25).start();
    }
   
    public void run() {
        try {
            init();
            solve();
        } catch (Exception e) {
            throw new RuntimeException(e);
        } finally {
            out.close();
        }
    }
    
    void init() throws Exception {
    	if (fromFile) {
    		in = new BufferedReader(new FileReader(filename+".in"));
        	out = new PrintWriter(new FileWriter(filename+".out"));
    	} else {
    		in = new BufferedReader(new InputStreamReader(System.in));
        	out = new PrintWriter(System.out);
    	}
        sc = new FastScanner(in);
    }
}

class FastScanner {
    
    BufferedReader reader;
    StringTokenizer strTok;
    
    public FastScanner(BufferedReader reader) {
        this.reader = reader;
    }
    
    public String nextToken() throws IOException {
        while (strTok == null || !strTok.hasMoreTokens()) {
            strTok = new StringTokenizer(reader.readLine());
        }
        
        return strTok.nextToken();
    }
    
    public int nextInt() throws IOException {
        return Integer.parseInt(nextToken());
    }
    
    public long nextLong() throws IOException {
        return Long.parseLong(nextToken());
    }
    
    public double nextDouble() throws IOException {
        return Double.parseDouble(nextToken());
    }
    
    public BigInteger nextBigInteger() throws IOException {
    	return new BigInteger(nextToken());
    }
    
    public BigDecimal nextBigDecimal() throws IOException {
    	return new BigDecimal(nextToken());
    }
}