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.util.ArrayList;
import java.util.Scanner;

public class Solution {
	public static void main(String[] args){
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		in.nextLine();
		int A, B, result,len,i,j,k;
		String that,original;
		String test="";
		ArrayList<String> poss = new ArrayList<String>();
		for(int zz = 1; zz <= T;zz++){
			result=0;
			A = in.nextInt();
			len = String.valueOf(A).length();
			poss = new ArrayList<String>();
			B = in.nextInt();
			in.nextLine();
			for (i = A; i <= B; i++){
				poss.add(String.valueOf(i));
			}
			for (i = 0; poss.size() > 0; i++){
				that = poss.get(0);
				poss.remove(0);
				original=that;
				for (k=0; k < len; k++){
					test=test+that.charAt(len-1);
					for (j=0; j < (len-1); j++){
						test=test+that.charAt(j);
					}
					if (that.charAt(len-1) != '0' && poss.contains(test)){
						result++;
						//System.out.format("(%s,%s)\n",original,test);
					}
					that=test;
					test="";
				}
			}
			System.out.format("Case #%d: %d\n",zz, result);
		}
	}
}
