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;

class Recycle{
    static Scanner sc = new Scanner(System.in);
    static long[] pow={1,10,100,1000,10000,100000,1000000,10000000};
    public static void solve()
    {
	long A =sc.nextInt();
	long B =sc.nextInt();
	long sum=0;
	long j;
	String si,sj,sk;
	int tj,k;
	Boolean t2,t=false;
	int d,z='0';
	for(long i=A;i<=B;i++)
	    {if(i>9){
		    // t=(i%10==0);
		
	     	    // j=(i/10)+(i%10)*pow[(int)Math.round(Math.floor(Math.log(i)/Math.log(10)))];
		    si=""+i;
		    // tj=(int)(j%10);
		    // d=z+tj;
		    sj=si;
		    sk="";
		    sk=sk+sj.charAt(sj.length()-1);
		    for(k=1;k<sj.length();k++)
			sk=sk+sj.charAt(k-1);
		    // t2=t;
		    j=Integer.parseInt(sk);
		    
	     	    //System.out.println(i+" "+j);
		    while(!sk.equals(si))
			{
			    if(j>i && j<=B && j>=A && sk.charAt(0)!=0 && si.charAt(0)!=0)
				sum++;
			    sj=sk;
			    sk="";
			    sk=sk+sj.charAt(sj.length()-1);
			    for(k=1;k<sj.length();k++)
				sk=sk+sj.charAt(k-1);
			    j=Integer.parseInt(sk);
			    //System.out.println(i+" "+si+" "+j+" "+sk);
			    // if(!t2)
			    // 	j=(j/10)+(j%10)*pow[(int)Math.round(Math.floor(Math.log(j)/Math.log(10)))];	
			    // else
			    // 	j=(j/10)+(j%10)*pow[1+(int)Math.round(Math.floor(Math.log(j)/Math.log(10)))];
			    // t2=t;
			}
	     	}

	    }
	
	System.out.println(sum);
    }

    public static void main(String[] args)
    {
	int n=sc.nextInt();
	sc.nextLine();

	for(int i=0;i<n;i++)
	    {
		System.out.print("Case #"+(i+1)+": ");
		solve();
	    }
    }
    
}