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 ponder.CodeJamQualify;

import java.io.*;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

/**
 * @author: sg  Date: 15.04.12
 */
public class TaskC
{
	static Set<Integer> rotations(int x, int min, int max)
	{
		Set<Integer> rotations = new HashSet<Integer>();
		String s = Integer.toString(x);
		for (int i = 1; i < s.length(); i++)
		{
			String s2 = s.substring(i) + s.substring(0, i);
			if (s2.charAt(0) == '0')
				continue;

			Integer r = Integer.valueOf(s2);
			if ((x < r) && (r <= max))
				rotations.add(r);
		}
		return rotations;
	}

	static int calcMinMax(final int min, final int max)
	{
		int count = 0;
		for (int i = Math.max(min, 11); i < max; i++)
		{
			count += rotations(i, min, max).size();
		}
		return count;
	}

	public static void main(String[] args) throws IOException
	{
//		PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter("taskC.out")));
//		BufferedReader reader = new BufferedReader(new FileReader("taskC.in"));

		PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter("C-large.out")));
		BufferedReader reader = new BufferedReader(new FileReader("C-large.in"));

//		PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter("C-small-attempt0.out")));
//		BufferedReader reader = new BufferedReader(new FileReader("C-small-attempt0.in"));

//		PrintWriter writer = new PrintWriter(new BufferedWriter(new FileWriter("C-small-attempt1.out")));
//		BufferedReader reader = new BufferedReader(new FileReader("C-small-attempt1.in"));

		final long start = System.currentTimeMillis();

		String inLine;
		int caseIndex = 0;
		inLine = reader.readLine();
		while (null != (inLine = reader.readLine()))
		{
			StringTokenizer st = new StringTokenizer(inLine);
			int min = Integer.parseInt(st.nextToken());
			int max = Integer.parseInt(st.nextToken());
			int count = calcMinMax(min, max);
			caseIndex++;
			writer.printf("Case #%d: %d\r\n", caseIndex, count);
		}
		writer.close();

		final long finish = System.currentTimeMillis();
		final long dur = finish-start;
		System.err.println(dur);
	}
}
