import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.*;
import java.util.StringTokenizer;
import java.lang.Math;

public class qualifycodejamC{

	public static int checkNum(int num, int m, int n){
			String snum = Integer.toString(num);
			int[] array = new int[snum.length()];
			int min = num;
			int count = 0;

			for(int i=0;i<array.length;i++){
				boolean dupe = false;
				char[] temp = new char[snum.length()];
				for(int j=0;j<array.length;j++){
					temp[j] = snum.charAt((j + i) % snum.length());


				}
				array[i] = Integer.parseInt(new String(temp));
				//do a dupe check
				for(int k=0;k<i;k++){
					if(array[k] == array[i]){
						dupe = true;
					}
				}
				//System.out.print(";"+array[i]+";");

				if (m <= array[i] && array[i] <= n && array[i] != num && !dupe){
					count++;

				}
				if(Math.min(min,array[i]) >= m){
					min = (int)Math.min(min,array[i]);
				}
				//System.out.println("length: "+array.length+" current: "+num+"; min: "+ min);
			}

			if(min != num){
				//System.out.println();
				return 0;
			}
			//System.out.println("!X count: "+ count);
			if(count == 2){
				return 3;
			}else if(count == 3){
				return 6;
			}else if(count == 4){
				return 10;
			}else if(count == 5){
				return 16;
			}else if(count == 6){
				return 21;
			}else if(count == 7){
				return 28;
			}else if(count == 8){
				return 36;
			}

			return count;
	}

	public static void main(String[] args){

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		   String x = null;
		   String linein = null;
		   int totalcases = 0;
		   int result = 0;
		   int n = 0;
		   int m = 0;
		   int counter = 1;


		   try{
		    x = br.readLine();
		    totalcases = Integer.parseInt(x);

		    while( (linein = br.readLine()) != null){
					result = 0;

					StringTokenizer st = new StringTokenizer(linein);
					n = Integer.parseInt(st.nextToken());
					m = Integer.parseInt(st.nextToken());

					for (int i=n;i<m+1;i++){
						result = result + checkNum(i,n,m);
					}

					System.out.print("Case #" + (counter) + ": "+ result);
					//System.out.println(" debug: return val: "+process_return+"; used surprises: " + surprise_count + "/"+ttl_surprises);
					System.out.println();

					counter++;
				}

		   }
		   catch (IOException e) {
			   e.printStackTrace();
		   }

	}

}