import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Recycled {

	private static String fileNameSmall = "/Users/ogokal/Downloads/C-small-attempt0.in";
	private static String outputFilePath = null;
	
	private static void AppendCase(int caseId,String message, BufferedWriter bw) throws IOException{
		bw.write("Case #"+caseId+": "+message+"\n");
	}
	
	private static String OutputFile(String inputFilePath){
		int dotIdx = inputFilePath.lastIndexOf('.');
		return inputFilePath.substring(0, dotIdx)+".out";
	}
	
	private static int Count(int low,int current, int high,int currentIdx, int total,Set<String> counterSet){
		if (currentIdx >= Integer.toString(low).length()) {
			return total;
		}
		String currentStr = Integer.toString(current);
		String begin = currentStr.substring(0,currentIdx);
		String end = currentStr.substring(currentIdx);
		int currentInt = Integer.parseInt(end+begin);
		if (current != currentInt) {
			int min = Math.min(current, currentInt);
			int max = Math.max(current, currentInt);
			if (currentInt >= low && currentInt <= high && !counterSet.contains(min+" "+max)) {
				counterSet.add(min+" "+max);
				++total;
			}
		}
		return Count(low,current,high,currentIdx+1,total,counterSet);
		
	}
	
	public static void main(String[] args) throws IOException {
		
		Scanner scanner = new Scanner(new File(fileNameSmall));
		BufferedWriter bw = new BufferedWriter(new FileWriter(OutputFile(fileNameSmall)));
		int totalCaseCount = scanner.nextInt();
		scanner.nextLine();
		int caseCount = 0;
		while(caseCount < totalCaseCount){
			StringBuffer sb = new StringBuffer();
			int low = scanner.nextInt();
			int high = scanner.nextInt();
			int t = 0;
			Set<String> counterSet = new HashSet<String>();
			for (int i = low; i <= high; i++) {
				t = Count(low,i,high,1,t,counterSet);
			}
			sb.append(t);
			caseCount++;
			System.out.println(sb.toString());
			AppendCase(caseCount,sb.toString(),bw);
			scanner.nextLine();
		}
		bw.flush();
		bw.close();
		
	}

}
