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.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {		
	
	public static void main(String[] args) throws NumberFormatException, IOException {				
		FileInputStream inFile = new FileInputStream(new File("resources/codejam/RecycledNumbers.in"));			
		DataInputStream in = new DataInputStream(inFile);

		FileOutputStream outFile = new FileOutputStream(new File("resources/codejam/RecycledNumbers.out"));
		DataOutputStream out = new DataOutputStream(outFile);

		int cases = Integer.parseInt(in.readLine());
		
		for(int i=0;i<cases;i++) {
			doCase(i+1, in, out);
			if(i != cases - 1) {
				out.writeBytes("\n");
			}
		}
	}

	private static void doCase(int caseNo, DataInputStream in, DataOutputStream out) throws IOException {
		StringBuilder sb = new StringBuilder();
		sb.append("Case #");
		sb.append(caseNo);
		sb.append(": ");
		
		int recycles = 0;
		
		Scanner s = new Scanner(in.readLine());
		int a = s.nextInt();
		int b = s.nextInt();
		for(int i = a; i <= b; i++) {
			String numbers = String.valueOf(i);
			int len = numbers.length();
			if(len > 1) {								
				//check for recycles
				String firstStr = String.valueOf(numbers.charAt(0));
				int firstNo = Integer.parseInt(firstStr);
				HashSet<Integer> record = new HashSet<Integer>();
				for(int j = 1; j < len; j++) {
					int currNo = Integer.parseInt(String.valueOf(numbers.charAt(j)));
					if(currNo > firstNo || currNo == 0) {
						continue;
					}					
					String newNo = numbers.substring(j) + numbers.substring(0, j);  
																					
					Integer newVal = Integer.valueOf(newNo);
					if(newVal < i && newVal >= a) {												
						record.add(newVal);
					} 
				}	
				recycles+= record.size();
			}					
		}						
		sb.append(recycles);				
		out.writeBytes(sb.toString());
		
	}

	
}
