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


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;

/**
 * 
 */

/**
 * @author Bryan
 *
 */
public class problemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String filePath = "/Users/Bryan/Documents/CodeJam/ProblemC/C-large.in";
		boolean isFirstLine = true;
		int counter = 1;
		StringBuffer resultString = new StringBuffer();
		
		try {
			// Open the file that is the first
			// command line parameter
			FileInputStream fstream = new FileInputStream(filePath);
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			// Read File Line By Line
			while ((strLine = br.readLine()) != null) {
				if (isFirstLine){
					isFirstLine = false;
					continue;
				}
				
				resultString.append("Case #" + counter + ": ");
				String[] numberList = strLine.split(" ");
				int result = 0;
				int min = Integer.parseInt(numberList[0]);
				int max = Integer.parseInt(numberList[1]);
				for ( int a = min; a <= max; a++){
					result = result + noOfPairs(Integer.toString(a),min, max);
//					System.out.println("final result = " + result);
				}
				System.out.println("result = " + result/2);
				
				resultString.append(result/2);
				resultString.append("\n");
				counter++;
			}
			// Close the input stream
			in.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
		
		writeStringToFile(resultString.toString());
		
		


	}
	
	private static int noOfPairs(String num,int min, int max){
		int noOfPairs = 1;
		String oldString = num;

		String newString = "";
		String tempString = oldString;
		ArrayList<String> addedList = new ArrayList<String>();
		for ( int counter = 0; counter < oldString.length(); counter++){
			newString= tempString.substring(tempString.length()-1)+tempString.substring(0,tempString.length()-1);
			tempString=newString;
//			System.out.println(newString);
			
			if( !newString.startsWith("0") && Integer.parseInt(newString) <= max
					&&  Integer.parseInt(newString) >= min
					&&  !newString.equalsIgnoreCase(num)
					&& !addedList.contains(newString)){
				addedList.add(newString);
				noOfPairs++;
			}
		}
		if ( noOfPairs == 1 ){
			return 0;
		}
		return noOfPairs - 1;
//		return nCr(noOfPairs,2);
	}
	
	private static void writeStringToFile(String outputString) {
		try {
			// Create file
			FileWriter fstream = new FileWriter("/Users/Bryan/Documents/CodeJam/ProblemC/output.txt");
			BufferedWriter out = new BufferedWriter(fstream);
			out.write(outputString);
			// Close the output stream
			out.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}

}
