import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;


public class RecycledNumbers {		
	
	public static void main(String[] args) throws NumberFormatException, IOException {				
		FileInputStream inFile = new FileInputStream(new File("resources/codejam/RecycledNumbers.in"));			
		DataInputStream in = new DataInputStream(inFile);

		FileOutputStream outFile = new FileOutputStream(new File("resources/codejam/RecycledNumbers.out"));
		DataOutputStream out = new DataOutputStream(outFile);

		int cases = Integer.parseInt(in.readLine());
		
		for(int i=0;i<cases;i++) {
			doCase(i+1, in, out);
			if(i != cases - 1) {
				out.writeBytes("\n");
			}
		}
	}

	private static void doCase(int caseNo, DataInputStream in, DataOutputStream out) throws IOException {
		StringBuilder sb = new StringBuilder();
		sb.append("Case #");
		sb.append(caseNo);
		sb.append(": ");
		
		int recycles = 0;
		
		Scanner s = new Scanner(in.readLine());
		int a = s.nextInt();
		int b = s.nextInt();
		for(int i = a; i <= b; i++) {
			String numbers = String.valueOf(i);
			int len = numbers.length();
			if(len > 1) {								
				//check for recycles
				String firstStr = String.valueOf(numbers.charAt(0));
				int firstNo = Integer.parseInt(firstStr);
				HashSet<Integer> record = new HashSet<Integer>();
				for(int j = 1; j < len; j++) {
					int currNo = Integer.parseInt(String.valueOf(numbers.charAt(j)));
					if(currNo > firstNo || currNo == 0) {
						continue;
					}					
					String newNo = numbers.substring(j) + numbers.substring(0, j);  
																					
					Integer newVal = Integer.valueOf(newNo);
					if(newVal < i && newVal >= a) {												
						record.add(newVal);
					} 
				}	
				recycles+= record.size();
			}					
		}						
		sb.append(recycles);				
		out.writeBytes(sb.toString());
		
	}

	
}
