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.*;

public class RecycledNumbers {

	public static void main(String[] args) {
		if(args.length < 1) {
			System.out.println("Need a filename.");
		}
		else {
			File file = new File(args[0]);
			try {
				BufferedReader fin = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
				int numCases = Integer.parseInt(fin.readLine());
				for(int i=0; i<numCases; i++) {
					String line = fin.readLine();
					int min = Integer.parseInt(line.substring(0, line.indexOf(" ")).trim());
					int max = Integer.parseInt(line.substring(line.indexOf(" ")).trim());
					int count = 0;
					for(int a=min; a<max; a++) {
						for(int b = a+1; b<=max; b++) {
							if(isRecycled(a, b))
								count++;
						}
					}
					System.out.println("Case #" + (i+1) + ": " + count);
				}
			} catch(FileNotFoundException e) {
				System.err.println("File not found!");
			} catch(IOException e) {
				System.err.println("Could not read file!");
			}
		}
	}
	
	private static boolean isRecycled(int a, int b) {
		String aStr = "" + a;
		String bStr = "" + b;
		for(int i=1; i<aStr.length(); i++) {
			if((aStr.substring(i) + aStr.substring(0, i)).equals(bStr))
				return true;
		}
		return false;
	}
}
