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);
		}

	}
}

import java.util.List;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class ProblemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {

		File in = new File(
				"D:/Feng/Workspace/googlecodejam2012/problemC/in/C-large.in");

		try {
			BufferedWriter out = new BufferedWriter(new FileWriter(
					"D:/Feng/Workspace/googlecodejam2012/problemC/out/outlarge.txt"));
			StringBuilder s;
			String line = "";
			int min, max = 0;
			int count = 1;
			Scanner scanner = new Scanner(in);
			// Ignore the first line showing total count
			scanner.nextLine();
			while (scanner.hasNextLine()) {
				s = new StringBuilder("Case #");
				s.append(count);
				s.append(": ");
				line = scanner.nextLine();
				String[] limits = line.split(" ");
				min = Integer.parseInt(limits[0]);
				max = Integer.parseInt(limits[1]);
				
				s.append(countRecycledPairs(min, max));

				System.out.println(s);
				out.write(s.toString());
				out.newLine();
				count++;
			}
			scanner.close();
			out.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public static int countRecycledPairs(int min, int max) {
		
		//List<String> recycledPairs = new ArrayList<String>(1000);
		Set<String> recycledPairs = new HashSet<String>();
		String s = "";
		int m;

		for (int n = min; n < max; n++) {
			// Need at least 2 digits to recycle
			// Cannot have trailing zeroes i.e. n mod 10 = 0
			// Cannot have digits that are all the same

			s = String.valueOf(n);
			for (int numDigitsToReplace = 1; numDigitsToReplace < s.length(); numDigitsToReplace++) {
				// System.out.print(numDigitsToReplace + ", ");
				m = recycle(n, numDigitsToReplace);
				if ((m > n) && (m <= max)) {
					recycledPairs.add(n + ":" + m);
					//count++;
				}

			}

		}
		//System.out.print(recycledPairs.size());
		//System.out.println(recycledPairs.toString());
		return recycledPairs.size();
	}

	public static int recycle(int n, int numDigits) {

		String s = String.valueOf(n);
		StringBuilder sb = new StringBuilder(s);
		String rearDigits = s.substring(s.length() - numDigits);
		sb.delete(sb.length() - numDigits, sb.length());
		sb.insert(0, rearDigits);
		if (sb.toString().startsWith("0")) {
			return 0;
		}
		return Integer.parseInt(sb.toString());

	}

	public static boolean hasSameDigits(int i) {
		String s = String.valueOf(i);
		char[] chars = s.toCharArray();
		char firstDigit = chars[0];
		for (char c : chars) {
			if (c != firstDigit)
				return false;
		}
		return true;
	}
}
