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


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

/**
 * Copyright 2012 Christopher Schmitz. All Rights Reserved.
 */

package com.isotopeent.codejam.lib;

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;

public class Utils {

	private static final String FILE_IN_EXTENSION = ".in";
	private static final String FILE_OUT_EXTENSION = ".out";
	private static final String OUT_DATE_FORMAT = "_yyyy-MM-dd_HH-mm-ss";

	public static <T> void solve(String filePath, String fileName, InputConverter<T> inputConverter, SolverBase<T> solver) {
		File folder = new File(filePath);
		File fin = getInputFile(folder, fileName);
		File fout = getOutputFile(folder, fileName);
		if (!fout.exists()) {
			try {
				fout.createNewFile();
			} catch (IOException e) {
				System.err.println("Error creating file " + fout.getAbsolutePath());
				e.printStackTrace();
			}
		}
		InputReader<T> reader = null;
		SolutionWriter writer = null;
		try {
			reader = new InputReader<T>(fin, inputConverter);
			solver.init(reader);
			writer = new SolutionWriter(fout);
	
			int caseNum = 1;
			String solution;
			long startTime = System.currentTimeMillis();
			while ((solution = solver.solveNext()) != null) {
				writer.writeSolution(caseNum++, solution);
				writer.flush();
			}
			int time = (int)(System.currentTimeMillis() - startTime);
			System.out.println("Done in " + (time / 1000) + " seconds (" + (time / (caseNum - 1)) + "ms average)");
		} catch (Exception e) {
			System.err.println("Error solving");
			e.printStackTrace();
		}
		if (reader != null) {
			try {
				reader.close();
			} catch (IOException e) {
				// do nothing
			}
		}
		if (writer != null) {
			writer.flush();
			writer.close();
		}
	}

	public static File getInputFile(File folder, String fileName) {
		return new File(folder, fileName + FILE_IN_EXTENSION);
	}

	public static File getOutputFile(File folder, String fileName) {
		DateFormat dateFormat = new SimpleDateFormat(OUT_DATE_FORMAT);
		String date = dateFormat.format(Calendar.getInstance().getTime());
		return new File(folder, fileName + date + FILE_OUT_EXTENSION);
	}

	public static String[] convertToStringArray(String line) {
		return line.split(" ");
	}

	public static int[] convertToIntArray(String line, int count) {
		int[] items = new int[count];
		int wordStart = 0;
		for (int i = 0; i < count; i++) {
			int wordEnd = line.indexOf(' ', wordStart);
			if (wordEnd < 0) {
				wordEnd = line.length();
			}
			int param = Integer.parseInt(line.substring(wordStart, wordEnd));
			items[i] = param;
			wordStart = wordEnd + 1;
		}
		return items;
	}

	public static int convertToIntArray(String line, int[] itemsOut) {
		int count = 0;
		int wordStart = 0;
		int length = line.length();
		while (wordStart < length) {
			int wordEnd = line.indexOf(' ', wordStart);
			if (wordEnd < 0) {
				wordEnd = line.length();
			}
			int param = Integer.parseInt(line.substring(wordStart, wordEnd));
			itemsOut[count++] = param;
			wordStart = wordEnd + 1;
		}
		return count;
	}

}
