import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

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.util.Arrays;
import java.util.HashSet;

public class CRecycledNumbers {
	public static HashSet<Integer> hs = new HashSet<Integer>();
	public static int m;

	public static void solve() throws NumberFormatException, IOException {
		File f = new File("E:\\downloads\\C-large.in");
		BufferedReader reader = new BufferedReader(new FileReader(f));
		File f2 = new File("C:\\Users\\kimo\\Desktop\\out.txt");
		BufferedWriter writer = new BufferedWriter(new FileWriter(f2));
		int x = Integer.parseInt(reader.readLine());
		String st[] = null;

		for (int k = 0; k < x; k++) {
	
			st = reader.readLine().split(" ");
			int n = Integer.parseInt(st[0]);
			m = Integer.parseInt(st[1]);
			int count = 0;
			for (int i = n; i < m + 1; i++) {
				
				if (i < m) {
					count += numOfways(i + "");
				}
			}
			writer.write("Case #" + (k + 1) + ": " + count);
		writer.newLine();
		}
		writer.close();
		reader.close();
	}

//	public static boolean check(String n, String m) {
//		boolean found = false;
//		int i = 0;
//		for (; i < n.length() && !found; i++) {
//			if (n.charAt(i) == m.charAt(0)) {
//				found = true;
//			}
//		}
//
//		int j = 0;
//		i = i - 1;
//		while (j < m.length() && found) {
//
//			if (n.charAt(i) != m.charAt(j))
//				found = false;
//			j++;
//			i = (i + 1) % m.length();
//		}
//		return found;
//	}

	public static int numOfways(String n) {
		String tail = "";
		String head = "";
		String ss = "";
		int counter = 0;
hs.clear();
		for (int i = 1; i < n.length(); i++) {
			tail = n.substring(i, n.length());
			head = n.substring(0, i);
			ss = tail + head;
			
			int ssi = Integer.parseInt(ss);
			if ((ssi + "").length() == n.length()&&ssi>Integer.parseInt(n)) {
				if ( ssi <= m&&!hs.contains(ssi)) {
					hs.add(ssi);
					
					counter++;
				}
				
			}

		}
		return counter;

	}

	public static void main(String[] args) throws NumberFormatException,
			IOException {
		solve();
		//m=500;
		//System.out.println(numOfways("301"));
	}

}
