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.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Properties;
import java.util.Set;

/**
 * Works good for CF
 * 
 * @author cykeltillsalu
 */
public class RecycleNumbers {

	// some local config
	static boolean test = true;
	static String testDataFile = "testdata.txt";
	static String feedFile = "feed.txt";
	CompetitionType type = CompetitionType.CF;
	private static String ENDL = "\n";

	// solution
	private void solve() throws Throwable {
		int n = iread();
		for (int i = 0; i < n; i++) {
			solveIt(i + 1);
		}
	}
	
	Set<String> pairs = new HashSet<String>();
	int min, max;
	private void solveIt(int nr) throws Throwable {
		pairs.clear();
		long ans = 0;
		
		min = iread();
		max = iread();
		
		for (int i = min; i <= max; i++) {
			ans += cnt(Integer.valueOf(i).toString());
		}
		
		System.out.println("Case #" + nr + ": " + ans);
	}

	private long cnt(String string) {
		pairs.clear();
		long ret = 0;
		for (int i = 1; i < string.length(); i++) {
			String asStr = string.substring(i) + string.substring(0,i);
			Integer valueOf = Integer.valueOf(asStr);
			if(valueOf > Integer.valueOf(string) && valueOf >= min && valueOf <= max){
				ret ++;
				String save = string + ">" + asStr;
				pairs.add(save);
			}
		}
		return pairs.size();
	}

	public int iread() throws Exception {
		return Integer.parseInt(wread());
	}

	public double dread() throws Exception {
		return Double.parseDouble(wread());
	}

	public long lread() throws Exception {
		return Long.parseLong(wread());
	}

	public String wread() throws IOException {
		StringBuilder b = new StringBuilder();
		int c;
		c = in.read();
		while (c >= 0 && c <= ' ')
			c = in.read();
		if (c < 0)
			return "";
		while (c > ' ') {
			b.append((char) c);
			c = in.read();
		}
		return b.toString();
	}

	public static void main(String[] args) throws Throwable {

		if (test) { // run all cases from testfile:
			BufferedReader testdataReader = new BufferedReader(new FileReader(testDataFile));
			String readLine = testdataReader.readLine();
			int casenr = 0;
			out: while (true) {
				BufferedWriter w = new BufferedWriter(new FileWriter(feedFile));
				if (!readLine.equals("input")) {
					break;
				}
				while (true) {
					readLine = testdataReader.readLine();
					if (readLine.equals("output")) {
						break;
					}
					w.write(readLine + "\n");
				}
				w.close();
				System.out.println("Answer on case " + (++casenr) + ": ");

				new RecycleNumbers().solve();
				System.out.println("Expected answer: ");

				while (true) {
					readLine = testdataReader.readLine();

					if (readLine == null) {
						break out;
					}
					if (readLine.equals("input")) {
						break;
					}
					System.out.println(readLine);
				}
				System.out.println("----------------");
			}
			testdataReader.close();
		} else { // run on server
			new RecycleNumbers().solve();
		}
		out.close();
	}

	public RecycleNumbers() throws Throwable {
		if (test) {
			in = new BufferedReader(new FileReader(new File(feedFile)));
		}
	}

	InputStreamReader inp = new InputStreamReader(System.in);
	BufferedReader in = new BufferedReader(inp);
	static BufferedWriter out = new BufferedWriter(new OutputStreamWriter(System.out));

	enum CompetitionType {
		CF, OTHER
	};
}