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));
			
		}
		
		
		

	}
	
	
}
package MyAllgoritmicLib;

public class Sort {
	public static int partition(int[] m, int a, int b) {
		int i = a;
		for (int j = a; j <= b; j++) // ïðîñìàòðèâàåì ñ a ïî b
		{
			if (m[j] >= m[b]) // åñëè ýëåìåíò a[j] íå ïðåâîñõîäèò
			// a[b],
			{
				int t = m[i]; // ìåíÿåì ìåñòàìè a[j] è a[a], a[a+1], a[a+2] è
				// òàê äàëåå...
				m[i] = m[j]; // òî åñòü ïåðåíîñèì ýëåìåíòû ìåíüøèå a[b] â
				// íà÷àëî,
				m[j] = t; // à çàòåì è ñàì a[b] «ñâåðõó»
				i++; // òàêèì îáðàçîì ïîñëåäíèé îáìåí: a[b] è a[i], ïîñëå ÷åãî
				// i++
			}
		}
		return i - 1; // â èíäåêñå i õðàíèòñÿ <íîâàÿ ïîçèöèÿ ýëåìåíòà a[b]> + 1
	}

	public static void quicksort(int[] m, int a, int b) // a - íà÷àëî ïîäìíîæåñòâà,
	// b -
	// êîíåö
	{ // äëÿ ïåðâîãî âûçîâà: a = 0, b = <ýëåìåíòîâ â ìàññèâå> - 1
		if (a >= b)
			return;
		int c = partition(m, a, b);
		quicksort(m, a, c - 1);
		quicksort(m, c + 1, b);
	}
}
