import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.util.Hashtable;
import java.util.StringTokenizer;


public class one {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		File f = new File("input.txt");
		FileInputStream instream = new FileInputStream(f);
		BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
				
		File f2 = new File("output.txt");
		FileOutputStream outstream = new FileOutputStream(f2);
		BufferedOutputStream of = new BufferedOutputStream(outstream);
		DataOutputStream writer = new DataOutputStream(of);
		
		int cases = Integer.parseInt(reader.readLine());
		for (int casenum = 1; casenum <= cases; casenum++) {
			String s = reader.readLine();
			StringTokenizer ts = new StringTokenizer(s);
			int x = Integer.parseInt(ts.nextToken());
			int y = Integer.parseInt(ts.nextToken());
			String s_out = "Case #"+casenum+": ";
			int count = 0;
			for (int i = x; i < y; i++) {
				for (int j = i+1; j <= y; j++) {
					if(isRecycled(i, j)){
						count++;
					}
				}
			}
			s_out += count;
			s_out += '\n';
			writer.write(s_out.getBytes());
			System.out.println(count);
		}
		
		writer.flush();
		writer.close();
	}
	static boolean isRecycled(int x_, int y_){
		String x = Integer.toString(x_);
		String y = Integer.toString(y_);
		String temp = "";
		String test = "";
		for (int i = 0; i < x.length()-1; i++) {
			temp += x.charAt(i);
			test = x.substring(i+1) + temp ;
			if(test.equalsIgnoreCase(y))
				return true;
		}
		return false;
	}

}
