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 qualification;

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

public class C_RecycledNumbers {
  //--------------------------------------------------------------------------------
  private static String ID="C";
  private static String NAME="large";
  private static boolean STANDARD_OUTPUT=false;
  //--------------------------------------------------------------------------------
  public static void main(String[] args) throws Throwable {
    int[][] results=new int[2000001][];
    for (int i=0; i<results.length; i++) {
      int array[]=new int[8],n=0;
      String s=""+i;
      loop:for (int p=1; p<s.length(); p++) if (s.charAt(p)!='0') {
        int j=Integer.parseInt(s.substring(p)+s.substring(0,p));
        if (j<=i) continue loop;
        for (int q=0; q<n; q++) if (array[q]==j) continue loop;
        if (array.length==n) array=Arrays.copyOf(array,n*2);
        array[n++]=j;
      }
      results[i]=Arrays.copyOf(array,n);
      Arrays.sort(results[i]);
    }
    BufferedReader reader=new BufferedReader(new FileReader(new File("data/"+ID+"-"+NAME+".in")));
    if (!STANDARD_OUTPUT) System.setOut(new PrintStream(new File("data/"+ID+"-"+NAME+".out")));
    for (int c=1,T=Integer.parseInt(reader.readLine()); c<=T; c++) {
      String w[]=reader.readLine().trim().split(" +");
      int A=Integer.parseInt(w[0]),B=Integer.parseInt(w[1]);
      int count=0;
      for (int i=A; i<=B; i++) {
        // Binary Search doesn't represent an improvement
        for (int x:results[i]) if (x<=B) count++;
      }
      System.out.println("Case #"+c+": "+count);
    }
    if (!STANDARD_OUTPUT) System.out.close();
    reader.close();
  }
}
