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.awt.Polygon;
import java.awt.geom.Point2D;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;

public class C implements Runnable {

	
	int rotate(int a, int pw) {
		return (a / 10) + (a % 10) * pw;
	}
	
	private void solve() throws IOException {
		int a = nextInt();
		int b = nextInt();
		
		int pw10 = 1;
		for (; pw10 * 10 <= a; pw10 *= 10)
			;
		
//		System.out.println(rotate(1, 10));
			
		boolean[] was = new boolean[b + 1];
		int qlen = 0;
		long ans = 0;
		for (int i = a; i <= b; ++i) {
			
			qlen = 1;
			was[i] = true;
			for (int j = rotate(i, pw10); j > b || !was[j]; j = rotate(j, pw10)) {
				if (a <= j && j <= b) {
					was[j] = true;
					++qlen;
				}				
			}
			ans += qlen * (qlen - 1) / 2;
		}
		out.println(ans);		
	}

	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		(new Thread(new C())).start();
	}

	private BufferedReader br;
	private StringTokenizer st;
	private PrintWriter out;
	private String filename = "";

	@Override
	public void run() {
		try {
			br  = new BufferedReader(new FileReader("input.txt"));
			st  = new StringTokenizer("");
			out = new PrintWriter("output.txt");
			int T = nextInt();
			for (int i = 1; i <= T; ++i) {
				out.print("Case #" + i + ": ");
				solve();
			}
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
			System.exit(-1);
		}		
	}

	String next() throws IOException {
		while (!st.hasMoreTokens()) {
			String temp = br.readLine();
			if (temp == null) {
				return null;
			}
			st = new StringTokenizer(temp);
		}
		return st.nextToken();		
	}
	int nextInt() throws IOException {
		return Integer.parseInt(next());
	}
	long nextLong() throws IOException {
		return Long.parseLong(next());
	}
	double nextDouble() throws IOException {
		return Double.parseDouble(next());
	}
}
