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.util.Scanner;
import java.io.*;

public class Recycled {

  public static void main(String[] args) throws FileNotFoundException, IOException {
    Scanner input = new Scanner(new File(args[0]));
    Scanner lin;
    int lines = 0;
    
    if (input.hasNextInt()) {
      lines = input.nextInt();
      input.nextLine();
    }
    
    String nLine;
    String numtostr;
    int tonumber;
    int count;
    int strl;
    int a, b;
    int addednums[];
    boolean didrepeat;
    
    PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));


    for (int i = 0; i < lines; i++) {
      nLine = input.nextLine();
      lin = new Scanner(nLine);
      out.print("Case #" + (i + 1) + ": ");
      
      a = lin.nextInt();
      b = lin.nextInt();
      
      count = 0;
      
      for (int k = a; k <= b; k++) {
        numtostr = "" + k;
        strl = numtostr.length();
        addednums = new int[strl];
        for (int j = 0; j < strl; j++) {
          didrepeat = false;
          tonumber = Integer.parseInt(numtostr.substring(j, strl) + numtostr.substring(0, j));
          addednums[j] = tonumber;
          for (int l = 0; l < j; l++) {
            if (tonumber == addednums[l]) didrepeat = true;
          }
          if (k > tonumber && tonumber >= a && didrepeat == false) {
            count++;
          }
        }
      }
      
      out.println(count);
      
    }
    
    out.close();
  
  }

}