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);
		}

	}
}

package com.google.codejam;

import static java.math.BigInteger.ONE;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.Scanner;

public class RotatingNumbers {

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		new RotatingNumbers().run();
	}

	private int count(BigInteger minValue, BigInteger maxValue) {
		BigInteger currentNumber = minValue;
		int counter = 0;
		
		while (!maxValue.equals(currentNumber)) {
			BigInteger candidate = null;
			int r = 1;
			while (!currentNumber.equals(candidate)) {
				candidate = rotateLeft(currentNumber, r++);
				if (candidate.compareTo(currentNumber) > 0 && candidate.compareTo(maxValue) <= 0 && candidate.compareTo(minValue) >= 0) {
					counter++;
				}
			}
			currentNumber = currentNumber.add(ONE);
		}
		return counter;
	}

	private void run() throws FileNotFoundException {
		BigInteger[][] data = parseInput("input");
		Integer[] result = solve(data);
		printResult(result, "output");
	}
	
	private Integer[] solve(BigInteger[][] data) {
		Integer[] result = new Integer[data.length];
		for (int i = 0; i < data.length; i++) {
			result[i] = count(data[i][0], data[i][1]);
		}
		return result;
	}

	private BigInteger rotateLeft(BigInteger value, int digits) {
		String stringValue = value.toString(10);
		StringBuilder result = new StringBuilder(stringValue.substring(digits));
		result.append(stringValue.substring(0, digits));
		return new BigInteger(result.toString(), 10);
	}

	private void printResult(Integer[] result, String path) throws FileNotFoundException {
		PrintWriter p = new PrintWriter(new File(path));
		try { 
			for (int i = 1; i < result.length+1; i++) {
				p.format("Case #%d: %d\n", i, result[i-1]);
			}
		} finally {
			p.close();
		}
	}

	private BigInteger[][] parseInput(String path) throws FileNotFoundException {
		Scanner scanner = new Scanner(new File(path));
		try {
			BigInteger[][] input = new BigInteger[scanner.nextInt()][2];
			scanner.nextLine(); // skip to the next line
			for (int i = 0; i < input.length; i++) {
				input[i][0] = new BigInteger(scanner.next());
				input[i][1] = new BigInteger(scanner.next());
//				scanner.nextLine();
			}
			return input;
		} finally {
			scanner.close();
		}
	}
}
