import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

package googleCodeJam;

import static java.lang.System.out;

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.Set;
import java.util.TreeSet;

public class RecycledNumbers {
  public static void main(String[] args) throws Exception {
    if (args.length == 1) {
      // opening the input
      BufferedReader in = new BufferedReader(new FileReader(args[0]));
      
      // reading the number of test cases
      String line = null;
      int numberOfTestCases = ((line = in.readLine()) != null) ? Integer.parseInt(line) : 0;
      for (int t = 0; t < numberOfTestCases; t ++) {
        line = in.readLine();
        out.print("Case #" + (t+1) + ": ");
        
        // parse input
        String[] numbers = line.split(" ");
        int n = Integer.parseInt(numbers[0]);
        int m = Integer.parseInt(numbers[1]);
        
        int counter = 0;
        StringBuffer is = new StringBuffer(128);
        String isCurrent = null;
        for (int i = n; i <= m; i ++) {
          is.append(i);
          int size = is.length();
          is.append(i);
          //
          Set<Integer> qs = new TreeSet<Integer>();
          for (int j = 0; j < size; j ++) {
            isCurrent = is.substring(j, j+size);
            int q = Integer.parseInt(isCurrent);
            if (i < q && q <= m /*&& !isCurrent.startsWith("0")*/) {
              //counter ++;
              //out.println(i + "\t" + q + "\t" + (size - j));
              qs.add(q);
            }
          }
          //
          counter += qs.size();
          is.setLength(0);
        }
        
        out.println(counter);
      }
      
      // closing the input
      in.close();
    } else {
      // show the usage
      System.err.println("Using: java googleCodeJam.RecycledNumbers input");
    }
  }

}
