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.*;
import java.util.HashMap;
public class RecycledNumbers {
	
	public static void main(String[] arg) {
		String output,line = null;
		int t,a,b, count, caseNum;
		String[] inp; 
		
		try {
			BufferedReader is = new BufferedReader(new FileReader("infile.txt"));
			FileWriter writer = new FileWriter("output.txt");
			line = is.readLine();
			t = Integer.parseInt(line);
			for(caseNum=1; caseNum<=t; caseNum++) {
				line = is.readLine();
				inp = line.split(" ");
				
				a = Integer.parseInt(inp[0].trim());
				b = Integer.parseInt(inp[1].trim());
				
				count = generateRotatedNumbersCount(a, b);
				output = "Case #" + caseNum + ": " + count + "\n";
				writer.write(output.toCharArray());
			}
			writer.close();
		} catch (NumberFormatException ex) {
			System.out.println("Not a valid number: " + line);
		} catch (IOException e) {
			System.out.println("Unexpected IO ERROR: " + e);
		}
	}
	
	public static int generateRotatedNumbersCount(int a, int b) { 
		HashMap<Integer, Boolean> map;
		HashMap<Integer, Boolean> masterList = new HashMap<Integer, Boolean>();
		String num;
		char[] temp;
		int i,j,k,len;
		int n, count=0;
		
		for (k=a; k<=b; k++) {
			if (masterList.containsKey(k))
				continue;
			num = Integer.toString(k);
			char[] digits = num.toCharArray();
			
			len = digits.length;
			
			map = new HashMap<Integer, Boolean>();
			for (i=0; i<len; i++) {
				temp = new char[len];
				for (j=0; j<len; j++) {
					if (i+j<len)
						temp[j] = digits[i + j];
					else
						temp[j] = digits[i + j - len];
				}
				
				n = Integer.parseInt(new String(temp));
				if (n >= a && n <= b) {
					
					map.put(n, true);
					masterList.put(n, true);
				}
			}
			len = map.size();
			count += (len*(len-1))/2;
		}
		return count;
	}
}