import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.Scanner;


public class A {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int T,no1,no2,k=0;
		A obj=new A();	
		T=sc.nextInt();
		int cnt=0;
		while(T>0)
		{	cnt++;
			no1=sc.nextInt();
			no2=sc.nextInt();
			k=0;
			for(int i=no1;i<=no2;i++)
			{
				for(int j=no1;j<=no2;j++)
				{
						if(i!=j)
						{
							k+=obj.chk(i,j);
							
							
						}
					
				}
				
			}
			System.out.println("Case #"+cnt+": "+k/2);
			T--;
		}
	}
	char ip1[]=new char[10];
	char ip2[]=new char[10];
	int length1(int n)
	{int i=0;
		while(n>0)
		{
			n=n/10;
			i++;
		}
		return i;
	}
	public int chk(int a,int b)
	{
		int l1,tn=1;
		l1=length1(a);
		
		
		//System.out.println("n1:"+a+" n2:"+b);

		for(int i=1;i<l1;i++)
		{int at=a,at2,at1;
		tn=1;
			for(int j=1;j<=i;j++)
			{
				tn*=10;
			}
				at1=at%tn;
				//System.out.println("at:"+at1);
				at2=at/tn;
				
				//System.out.println("at:"+at2);
				tn=1;
				for(int j=1;j<=length1(at2);j++)
				{
					tn*=10;
				}	
			int atmp=at1*tn+at2;
			//System.out.println("atmp:"+atmp);

			if(atmp==b)
				return 1;
			
		}
		return 0;
	}


}
