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.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Scanner;

public class C {

	static final char[] digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' };
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		Scanner sc = null;
		if (args != null && args.length > 0) {
			
			try {
				sc = new Scanner(new File(args[0]));
					
				if (args.length > 1) {
					System.setOut(new PrintStream(new BufferedOutputStream(new FileOutputStream(new File(args[1])), 128)));
				}
			} catch (FileNotFoundException e) {
				
				// e.printStackTrace();
				sc = new Scanner(System.in);
			}
			
		} else {
			
			sc = new Scanner(System.in);
		}

		int T = Integer.valueOf(sc.nextLine());
		
		for (int i = 0; i < T; i++) {
			
			int A = sc.nextInt();
			int B = sc.nextInt();
			
			int answer = solve(A, B);
			System.out.printf("Case #%d: %d\n", i + 1, answer);
			
		}
		System.out.close();
	}
	
	public static int solve(int A, int B) {
		
		int answer = 0;
		int seedNum = A;
		do {
			
			answer += hasRecycled(seedNum++, A, B);
			
		} while (seedNum < B);
		return answer;
	}
	
	public static int hasRecycled(long seedNum, long A, long B) {
		
		int count = 0;
		int ptr;
		char[] old_num_chars = String.valueOf(seedNum).toCharArray();
		int length = old_num_chars.length;
		char[] moved_num_chars = new char[length];
		List<Long> newNumList = new ArrayList<Long>();
		
		for (int i = length - 1; i > 0; i--) {
			
			ptr = i;
			for (int j = 0; j < length; j++) {
				
				if (ptr == 0) {
					
					moved_num_chars[ptr] = old_num_chars[length - 1];							
				} else {			
					
					moved_num_chars[ptr] = old_num_chars[ptr - 1];					
				}
				
				if (--ptr < 0) {
					ptr += length;
				}
				
			}
			
			
			long newNum = Long.valueOf(new String(moved_num_chars));
			if ( seedNum < newNum && newNum <= B) {
				
				boolean isNew = true;
				for (Iterator<Long> it = newNumList.iterator(); it.hasNext();) {
					Long l = it.next();
					
					if (l.equals(newNum)) {
						isNew = false;
						break;
					}
				}
				if (isNew) {
					newNumList.add(newNum);					
					count++;
					
				}
			}
			old_num_chars = moved_num_chars.clone();
			
		}
		
		return count;
	}

}
