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.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;


public class MainImpl {

	public static int numberOfLines;
	
	public static int firstNumber;
	
	public static int secondNumber;
	
	public static ArrayList<String> eachLine = new ArrayList<String>();
	
	public static void main(String[] args) {

		readFile();
		for (int i = 1; i<= numberOfLines ; i++) {
			findSets(eachLine.get(i - 1), i);
		}
		System.out.print("Done with conversion");
	}
	
	public static void findSets(String line, int index) {
		StringBuffer buffer = new StringBuffer();
		buffer.append("Case #").append(index).append(": ");
		
		int totalUniqueCases = 0;
		String[] numbers = line.split(" ");
		
		String firstNumberString = numbers[0];
		String secondNumberString = numbers[0];
		
		firstNumber = Integer.parseInt(numbers[0]);
		secondNumber = Integer.parseInt(numbers[1]);
		
		if (firstNumber > secondNumber) {
			buffer.append(String.valueOf(totalUniqueCases));
			writeToFile(buffer.toString());
			return;
		}
		
		if (firstNumberString.length() == 1 && (secondNumberString.length() == 1)) {
			buffer.append(String.valueOf(totalUniqueCases));
			writeToFile(buffer.toString());
			return;
		}
		
		int numberBeingConsidered = firstNumber;
		
		int totalNumberOfSets = 0;
		
		while (numberBeingConsidered <= secondNumber) {
			
			totalNumberOfSets = totalNumberOfSets + findPermutations(numberBeingConsidered);
			numberBeingConsidered++;
		}
		buffer.append(String.valueOf(totalNumberOfSets));
		writeToFile(buffer.toString());
	}
	
	public static int findPermutations(int numberBeingConsidered) {
		
		int validPermutations = 0;
		
		String numberBeingConsideredString = String.valueOf(numberBeingConsidered);
		
		ArrayList<String> possiblePermutaions = new ArrayList<String>();
		
		for (int i = numberBeingConsideredString.length() - 1; i>=1; i--) {
			
			String permutationString = numberBeingConsideredString.substring(i) + numberBeingConsideredString.substring(0, i);
			
			if (!numberBeingConsideredString.equals(permutationString) && (!possiblePermutaions.contains(permutationString))) {
				
				int permutationNumber = Integer.parseInt(permutationString);
				
				if ((firstNumber <= numberBeingConsidered) && (numberBeingConsidered < permutationNumber) && (permutationNumber <= secondNumber)) {
					validPermutations++;
					possiblePermutaions.add(permutationString);
				}
				
			}
		}
		return validPermutations;
	}
	
	public static void readFile() {
		try {
			FileInputStream fstream = new FileInputStream("src/input.txt");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			numberOfLines = Integer.parseInt(br.readLine());
			while ((strLine = br.readLine()) != null) {
				eachLine.add(strLine);
			}
			in.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}
	}
	
	public static void writeToFile(String line) {
		try {
			BufferedWriter bw = new BufferedWriter(new FileWriter(new File(
					"src/output.txt"), true));
			bw.write(line);
			bw.newLine();
			bw.close();
		} catch (Exception e) {
			System.out.println("Error occured " + e);
		}

	}
}
