import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejamc;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.Iterator;

/**
 *
 * @author strigazi
 */
public class TextFile implements Iterable<String> {

  // Used by the TextFileIterator class below
  final String filename;

  public TextFile(String filename) { 
    this.filename = filename; 
  }

  // This is the one method of the Iterable interface
  public Iterator<String> iterator() { 
    return new TextFile.TextFileIterator(); 
  }


  // This non-static member class is the iterator implementation
  class TextFileIterator implements Iterator<String> {

    // The stream we're reading from
    BufferedReader in;

    // Return value of next call to next()
    String nextline;

    public TextFileIterator() {
      // Open the file and read and remember the first line.
      // We peek ahead like this for the benefit of hasNext().
      try {
        in = new BufferedReader(new FileReader(filename));
        nextline = in.readLine();
      } catch(IOException e) { 
        throw new IllegalArgumentException(e); 
      }
    }

    // If the next line is non-null, then we have a next line
    public boolean hasNext() { 
      return nextline != null; 
    }

    // Return the next line, but first read the line that follows it.
    public String next() {
      try {
        String result = nextline;

        // If we haven't reached EOF yet
        if (nextline != null) {  
          nextline = in.readLine(); // Read another line
          if (nextline == null) 
            in.close();             // And close on EOF
        }

        // Return the line we read last time through.
        return result;
      } catch(IOException e) { 
        throw new IllegalArgumentException(e); 
      }
    }

    // The file is read-only; we don't allow lines to be removed.
    public void remove() { 
      throw new UnsupportedOperationException(); 
    }
  }
}
