package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

import java.io.*;
import java.util.*;
class Problems 
{
    public static void main (String [] args) throws Exception 
    {
        BufferedReader f = new BufferedReader(new FileReader("input.java"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("output.java")));
        StringTokenizer st = new StringTokenizer(f.readLine());
        int T=Integer.parseInt(st.nextToken());
        for(int t=0;t<T;t++) {
            st=new StringTokenizer(f.readLine());
            int A=Integer.parseInt(st.nextToken());
            int B=Integer.parseInt(st.nextToken());
            long ans=0;
            for(int i=A;i<=B;i++) {
                String currNum=i+"";
                for(int j=0;j<currNum.length();j++) {
                    currNum=currNum.charAt(currNum.length()-1)+currNum.substring(0,currNum.length()-1);
                    int curr=Integer.parseInt(currNum);
                    if(curr>i&&curr<=B) {
                        ans++;
                    }
                }
            }
            System.err.println((t+1)+"");
            out.println("Case #"+(t+1)+": "+ans);
        }
        out.close();
        System.exit(0);
    }
}
