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.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;


public class Prob3 {

	
	public static void main(String[] args) throws NumberFormatException, IOException {
//		String filePath = "C://Users//Apoorv//Desktop//test1.txt";
		String filePath = "C://Users//Apoorv//Downloads//C-large.in";
		BufferedReader br2 = new BufferedReader(new InputStreamReader(
				new DataInputStream(new FileInputStream(filePath))));

		FileWriter fstream = new FileWriter(
				"C://Users//Apoorv//Dropbox//Code//workspace//CodeJam//src//tempAnswer.txt");
		BufferedWriter out = new BufferedWriter(fstream);

		String str = null;
		long count = 0;
		Integer numCases = 0;
		numCases = Integer.parseInt(br2.readLine());
		for (int curCase = 0; curCase < numCases; curCase++) {
			System.out.print("Case #" + (curCase + 1) + ": ");
			out.write("Case #" + (curCase + 1) + ": ");
			str = br2.readLine();
			String[] tokens = str.split(" ");
			
			int num1 = Integer.parseInt(tokens[0]);
			int num2=  Integer.parseInt(tokens[1]);
			int curLength = getLength(num1);
			int countOfPossibilities=0;
			for (Integer curNumber = num1;curNumber<num2;curNumber++){
				String numString1 = curNumber.toString();
				char[] charArray1 = numString1 .toCharArray();
				for(int curIteration = curLength;curIteration>1;curIteration--){
					char[] charArrayBuilding = new char[charArray1.length];
					for(int i=0;i<curLength;i++){
						charArrayBuilding[i] = charArray1[(curIteration-1+i) % (curLength)];	
					}
					StringBuilder g = new StringBuilder();
					for(int i=0;i<charArrayBuilding.length;i++){
//						System.out.print(charArrayBuilding[i]);
						g.append(charArrayBuilding[i]);
					}
//					System.out.print(",");
					
					
					int newNumber=Integer.parseInt(g.toString());
					if(newNumber>curNumber && newNumber<=num2 && getLength(newNumber)==curLength){
						countOfPossibilities++;
//						System.out.print(newNumber + ",");
//						out.write(newNumber + ",");
					}
				}
			}
			System.out.println(countOfPossibilities);
			out.write(countOfPossibilities + "\n");
		}
		out.close();
	}

	private static int getLength(int num1) {
		int exponent = 1;
		while(true){
			num1/=10;
			if(num1==0){
				return exponent;
			}
			else
				exponent++;
		}		
	}
}

