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.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashMap;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			BufferedReader br = new BufferedReader(new FileReader("/Users/William/Desktop/C-large.in"));
			String strLine;
			
			FileWriter fostream = new FileWriter("/Users/William/Desktop/output.txt");
			BufferedWriter out = new BufferedWriter(fostream);
			
			strLine = br.readLine();
			int numOfLine = Integer.parseInt(strLine);
			
			for (int i=1;i<numOfLine+1;i++) {
				strLine = br.readLine();
				
				String splitedStr[] = strLine.split(" ");
				String first = splitedStr[0];
				String second = splitedStr[1];
				
				int firstNum = Integer.parseInt(first);
				int secondNum = Integer.parseInt(second);
								
				int count = 0;
				for (int k=firstNum;k<=secondNum;k++) {

					Integer kInt = new Integer(k);
					String kStr = kInt.toString();
					
					HashMap<Integer, ArrayList<Integer>> map = new HashMap<Integer, ArrayList<Integer>>();

					for (int j=1;j<kStr.length();j++) {
						String digit = kStr.substring(kStr.length()-j);
						String rest = kStr.substring(0, kStr.length()-j);
						
						String newStr = digit + rest;
						if (newStr.charAt(0)=='0') {
							continue;
						}
						
						int newNum = Integer.parseInt(newStr);
						
						ArrayList<Integer> list;
						if (map.get(k)==null) {
							list = new ArrayList<Integer>();
						}
						else {
							list = map.get(k);
						}
						
						boolean contains = false;
						for (Integer m : list) {
							if (m.intValue()==newNum) {
								contains = true;
								break;
							}
						}
						
						if (contains) {
							continue;
						}
						
						list.add(newNum);
						map.put(k, list);
						
						if ((newNum>k) && (newNum<=secondNum)) {
//							System.out.println("(" + k + " , " + newNum + ")");
							count ++;
						}
					}
				}
				System.out.println("Case #" + i + ": " + count);
				out.write("Case #" + i + ": " + count + "\n");
			}
			out.close();
			br.close();
		}
		catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
	}

}
