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.IOException;
import java.io.InputStreamReader;
import java.io.StreamTokenizer;
import java.lang.reflect.Array;
import java.util.ArrayList;


public class C {

	private static ArrayList<Byte> makeCycle(ArrayList<Byte> digits) {
		if (digits.size() == 1) {
			return new ArrayList<Byte>(digits);
		}
		
		ArrayList<Byte> cycle = new ArrayList<Byte>();
		int tail = 0;
		
		while (tail < digits.size() && digits.get(tail) == 0) {
			++tail;			
		}
		
		cycle = new ArrayList<Byte>(digits.subList(tail + 1, digits.size()));
		
		for (int i = 0;i <= tail; ++i) {
			cycle.add(digits.get(i));
		}
		
		return cycle;
	}
	
	private static boolean sequenceEquals(ArrayList<Byte> sec1, ArrayList<Byte> sec2) {
		for (int i = 0;i < sec1.size(); ++i) {
			if (sec1.get(i) != sec2.get(i)) {
				return false;
			}
		}
		return true;
	}
	
	private static long value(ArrayList<Byte> digits) {
		long val = 0;
		long pow = 1;
		
		for (int i = 0;i < digits.size(); ++i) {
			val += digits.get(i) * pow;
			pow *= 10;
		}
		
		return val;
	} 
	
	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
		StreamTokenizer tokenizer = new StreamTokenizer(in);

		int tests;
		
		tokenizer.nextToken();
		tests = (int)tokenizer.nval;
		
		int[] answers = new int[tests];
		
		for (int i = 0;i < tests; ++i) {
			long A, B;
			
			tokenizer.nextToken();
			A = (long)tokenizer.nval;
			
			tokenizer.nextToken();
			B = (long)tokenizer.nval;			
			
			for (long n = A; n <= B; ++n) {
				ArrayList<Byte> digits = new ArrayList<Byte>();
				
				long v = n;
				
				while (v > 0) {
					digits.add(Byte.valueOf(Long.toString(v % 10)));
					v = v / 10;
				}				
								
				ArrayList<Byte> cycled = new ArrayList<Byte>(digits);
				
				while (!sequenceEquals(cycled = makeCycle(new ArrayList<Byte>(cycled)), digits)) {
					long val = value(cycled);
					if (val <= B && val > n) {
						++answers[i];
					}
				}
			}
		}
		
		for (int i = 0;i < tests; ++i) {
			System.out.println("Case #" + (i + 1) + ": " + answers[i]);
		}
	}

}
