import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class Numbers {
	
	private static int [][] input;
	private static int [] output;
	
	public static void main(String [] args) throws NumberFormatException, IOException{
		
		readData();
		output = new int [input.length];
		
		for (int i=0 ; i< input.length ; i++){
			output[i] = numberOfPairs(input[i][0], input[i][1]);
		}
		
		writeData();
	}

	public static int numberOfPairs(int a, int b){
		int r=0;
		
		for (int i=a ; i<=b ; i++ )
		{
			
			String A = Integer.toString( i );
			int f = flip(A);
			int f2 = flip2(A);
			int f3 = flip3(A);
			int f4 = flip4(A);
			int f5 = flip5(A);
			int f6 = flip6(A);
			
			if ( i<f && a<=f && f<=b ){
				r++;
			
			}
			if (i>100){
				if ( i<f2 && a<=f2 && f2<=b && f2 !=f ){
					r++;
				
				}
			}
			
			if (i>1000){
				
				if ( i<f3 && a<=f3 && f3<=b && f2 !=f && f3 != f2 && f3 != f){
					r++;
			
						}			
				}	
			if (i>10000){
				
				if ( i<f4 && a<=f4 && f4<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f )
					r++;
				}
			if (i>100000){
				
				if ( i<f5 && a<=f5 && f5<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f
						&& f5 != f4 && f5 != f3 && f5!= f2 && f5 !=f)
					r++;
				}
			if (i>1000000){
				
				if ( i<f6 && a<=f6 && f6<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f
						&& f5 != f4 && f5 != f3 && f5!= f2 && f5 !=f && f6 !=f5 && f6 != f4 && f6 != 3 && f6 != f2
						&& f6 !=f )
					r++;
				}
			
		}
		return r;
		
	}
	
	public static int flip(String A){
		
		if(A.length() < 2)
			return 0;
		String ans = A.substring( 1)+ A.substring( 0, 1 );
		return Integer.parseInt( ans );
	
	}
	public static int flip2(String A){
		if(A.length() <3 )
			return 0;
	
	String ans = A.substring( 2)+ A.substring( 0, 2 );
	return Integer.parseInt( ans );

	}
	
	public static int flip3(String A){
		if(A.length() < 4)
			return 0;
		
		String ans = A.substring( 3)+ A.substring( 0, 3 );
		return Integer.parseInt( ans );

		}
	public static int flip4(String A){
		if(A.length() < 5)
			return 0;
		String ans = A.substring( 4)+ A.substring( 0, 4 );
		return Integer.parseInt( ans );

		}
	public static int flip5(String A){
		if(A.length() <6 )
			return 0;
		
		String ans = A.substring( 5)+ A.substring( 0, 5 );
		return Integer.parseInt( ans );

		}
	public static int flip6(String A){
		if(A.length() < 7)
			return 0;
		
		String ans = A.substring( 6)+ A.substring( 0, 6 );
		return Integer.parseInt( ans );

		}
	
	public static void readData() throws NumberFormatException, IOException{
		FileReader fr = new FileReader("Input.txt");
		BufferedReader br = new BufferedReader(fr);
		int numberOfInputs = Integer.parseInt( br.readLine() );
		input = new int [numberOfInputs][2];
		for (int i = 0; i<numberOfInputs ; i++  ){
			String [] numbers = ((String)(br.readLine())).split( " " );   
			for (int j = 0 ; j<2 ;j++){
				input [i][j] =  Integer.parseInt(numbers [j]);
			}
		}
		br.close();
	}
	
	public static void writeData() throws IOException{
		FileWriter fw = new FileWriter("Output.txt");
		BufferedWriter bw = new BufferedWriter(fw);
		for (int i = 0; i< output.length ; i++ ){
			String out = "Case #" +(i+1) +": "+ output[i];
			bw.write( out );
			bw.newLine();
		}
		bw.close();
	}
}
