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.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;


public class main {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader dat=new BufferedReader(new FileReader("input"));
		int BRCASE=Integer.parseInt(dat.readLine());
		for(int ic=1;ic<=BRCASE;ic++){
			String str[]= dat.readLine().split(" ");
			System.out.println("Case #"+ic+": "+test(Integer.parseInt(str[0]),Integer.parseInt(str[1])));
		}
	}
	public static int test(int n, int m){
		boolean [] pominati= new boolean[m-n+10];
		int rez=0;
		for(int i=n;i<=m;i++){
			int ttl=0;
			int tmp=i;
			if(!pominati[tmp-n]){
				do{
					if(tmp>=n && tmp<=m){
						if(!pominati[tmp-n]){
							pominati[tmp-n]=true;
							ttl++;
						}
					}
					tmp=rotate(tmp);
				}while(tmp!=i);
			}
			rez+=(ttl>=2)?comb(ttl,2):0;
		}
		return rez;
		
	}
	public static int rotate(int x){
		int pow = (int)Math.log10(x);
		do{
			if(x%10!=0){
				x = (int) ((int)x%10*Math.pow(10, pow)+(int)x/10);
				break;
			}else{
				x = (int) ((int)x%10*Math.pow(10, pow)+(int)x/10);
			}
		}while(true);
		return x;
	}
	
	public static int fact(int x){
		int ret=1;
		for(int i=1;i<=x;i++){
			ret*=i;
		}
		return ret;
	}
	public static long comb(int n, int k){
		if(k>(n-k))
		k=n-k;
		long c=1;
		for(int i=0; i<k; i++)
		{
			c=c*(n-i);
			c=c/(i+1);   
		}
		return c;
	}
}
