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.io.*;
class RNumber
{
 public static void main(String args[])throws Exception
 { 
    String[] output;
    BufferedReader in=new BufferedReader(new InputStreamReader(System.in));
	FileOutputStream fo=new FileOutputStream("probB.out");
	int T=Integer.parseInt(in.readLine());
	output=new String[T];
	int[][] inp=new int[T][];
	String temp="";
	for(int i=0;i<T;i++){
	temp=in.readLine();
	inp[i]=new int[]{Integer.parseInt(temp.split(" ")[0]),Integer.parseInt(temp.split(" ")[1])};
	}
	
	for(int i=0;i<T;i++){
	
	 int n=inp[i][0],m=inp[i][1],inc=0;
	 for(int nn=n;nn<=m;nn++){
		for(int mm=n;mm<=m;mm++){
		if(!(mm==nn)){
		 String nS=Integer.toString(nn);
		 String mS=Integer.toString(mm);
		 if(nS.length()==mS.length()){
		  int len=nS.length();
		  for(int ee=0;ee<len;ee++){
		   if(nS.equals(mS)){
		    inc++;
			break;
		   }else{
		    char exp=nS.charAt(0);
			String sa="";
			for(int yy=1;yy<len;yy++){
			sa+=nS.charAt(yy);
			}
			sa+=exp;
			nS=sa;
		   }
		   
		  }
		 }
		}
		}
	  }
	  output[i]="Case #"+(i+1)+": "+(inc/2);
	}
	
	   for(int d=0;d<output.length;d++){
    System.out.println(output[d]);
	if(d==output.length-1){
    fo.write((output[d]).getBytes());}
	else
	fo.write((output[d]+'\n').getBytes());
   }
 }
}