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.util.ArrayList;
import java.util.List;

public class Main {

	public static void main(String[] args) {
		List<String> lstLinesOutput = new ArrayList<String>();
		int iNbAnswers;
		List<String> lstLinesInput = FileReaderHandler.openFile("/home/guillaume/Bureau/input");
		
		
		for(int n=1;n< Integer.parseInt(lstLinesInput.get(0)) + 1;n++){
			String sOutput = "Case #" + n + ": ";
			List<String> box = new ArrayList<String>();
			iNbAnswers = 0;
			String sInput = lstLinesInput.get(n);
			String[] hInput = sInput.split(" ");
			//to int array
			int[] iInput = new int[hInput.length];
			for(int i=0;i < hInput.length;i++){
				iInput[i] = Integer.parseInt(hInput[i]);
			}
			
			int iMin = iInput[0];
			int iMax = iInput[1];
			for(int i=iMin;i<iMax + 1;i++){
				String s = "" + i;
				for(int j=1; j<s.length();j++){
					String depl = s.substring(s.length() -j);
					String sRecycled = depl + s.substring(0, s.length() - j);
					int iToTest = Integer.parseInt(sRecycled);
					if(iToTest <= iMax && iToTest > i && !box.contains(i + "-" + iToTest)){
						box.add(i + "-" + iToTest);
						iNbAnswers++;
					}
				}
			}
			sOutput += iNbAnswers;
			lstLinesOutput.add(sOutput);
		}
		
		if(Integer.parseInt(lstLinesInput.get(0)) != lstLinesOutput.size()){
			System.out.println("ERROR!!!");
		}
		FileWriterHandler.writeToFile(lstLinesOutput);
	}
}