import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Set;


public class QRC 
{
	// Basics for all problems
	private static final String LARGE = "large";
	private static final String SMALL = "small";
	private static final String IN = ".in";
	private static final String OUT = ".out";
	private static String SET;
	
	// Problem specific Globals
	private static Set<Pair> mPairs;
	
	public static void main(String[] args) throws Exception
	{
		SET = LARGE; // Which set id being evaluated
		readInputFile(SET+IN);
	}
	
	private static void readInputFile(String in) throws Exception
	{
		BufferedReader br = new BufferedReader(new FileReader(new File(SET+IN)));
		String line = null;
		int caseCount = 1;
		
		br.readLine();
		while ( (line = br.readLine()) != null )
		{
			String[] input = line.split(" ");
			final int A = Integer.parseInt(input[0]);
			final int B = Integer.parseInt(input[1]);
			mPairs = new HashSet<Pair>();
			for (int n = A; n < B; n++ )
			{
				String rotation = String.valueOf(n);
				int digitCount = rotation.length();
				for ( int i = 0; i < digitCount; i++ )
				{
					rotation = rotateN(rotation);
					int m = Integer.parseInt(rotation);
					if ( m > n && m <= B )
					{	
						mPairs.add(new Pair(n,m));
						//System.out.println(" --> ("+n+", "+m+") @ "+mPairs.size());
					}
				}
			}
			writeOutputLine(String.format("Case #%d: %d", caseCount, mPairs.size()));
			caseCount++;
		}
		
		br.close();
	}
	
	private static String rotateN(String nAsString)
	{	
		String bulk = nAsString.substring(0,nAsString.length()-1);
		char jumper = nAsString.charAt(nAsString.length()-1); 
		return jumper+bulk;
	}
	
	private static void writeOutputLine(String line) throws Exception
	{
		BufferedWriter bw = new BufferedWriter(new FileWriter(new File(SET+OUT),true));
		bw.append(line);
		bw.newLine();
		bw.flush();
		bw.close();
	}
}
