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.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
	public static void main(String[] args) {
		try {
			System.setOut(new PrintStream(new FileOutputStream("output.txt")));
			Scanner scanner = new Scanner(new File(args[0]));
			int testsNum = scanner.nextInt();
			
			String solution;
			for (int i=1; i<=testsNum; i++) {
				solution = solve(scanner);
				System.out.println("Case #"+i+": "+solution);
				System.err.println("Case #"+i+": "+solution);
			}
		} catch (Exception e) {e.printStackTrace();}
	}
	
	static class Pair {
		private int n;
		private int m;
		public Pair(int n, int m) {this.n=n; this.m=m;}
		public int hashCode() {return n^m;}
		public boolean equals(Object o) {
			if (!(o instanceof Pair)) return false;
			Pair p = (Pair)o;
			return n==p.n && m==p.m;
		}
		
	}
	
	private static String solve(Scanner scanner) {
		int A = scanner.nextInt();
		int B = scanner.nextInt();
		
		int ret=0;
		int r;

		int digits;
		Set<Pair> pairs = new HashSet<Pair>();
		Pair pair;
		for (int n=A; n<=B; n++) {
			digits = (int)Math.ceil(Math.log10(n));
			if (n>10) {
				for (int d=1; d<digits; d++) {
					r = rotate(n,d);
					if (n<r && r<=B) {
						pair = new Pair(n,r);
						if (!pairs.contains(pair)) {
							pairs.add(new Pair(n,r));
							ret++;
						}
					}
				}
			}
		}
		return ""+ret;
	}
	
	private static int rotate(int n, int pos) {
		return n%(int)Math.pow(10,pos)*(int)Math.pow(10, Math.ceil(Math.log10(n))-pos)+n/(int)Math.pow(10, pos);
	}
}
