import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.io.*;

public class mains {
	public static void main(String[] args) {
		BufferedReader input;
		BufferedWriter output;
		
		try {
			input = new BufferedReader(new FileReader("C-large.in"));
			output = new BufferedWriter(new FileWriter("output.out"));
			
			int caseCount = Integer.parseInt(input.readLine());
			
			String buf;
			String[] values;
			int minValue;
			int maxValue;
			int currentValue;
			int highest;
			int next;
			int result = 0;
			int numLength;
			
			for(int index = 1 ; index <= caseCount; ++index) {
				buf = input.readLine();
				values = buf.split(" ");
				
				minValue = Integer.parseInt(values[0]);
				maxValue = Integer.parseInt(values[1]);
				
				numLength = values[1].length();
				highest = (int)Math.pow(10, numLength - 1);
				result = 0;
				if(highest != 1) {
					for(int num = minValue; num <= maxValue ; ++num) {
						currentValue = num;
						for(int i = 0 ; i < numLength ; ++i) {
							next = currentValue / highest;
							currentValue %= highest;
							currentValue *= 10;
							currentValue += next;
							
							if(num < currentValue && currentValue <= maxValue)
								++result;
						}
					}
					
					output.write("Case #" + index + ": " + result);
					output.newLine();
				} else {
					output.write("Case #" + index + ": 0");
					output.newLine();
				}
			}
			
			output.close();
			input.close();
		} catch(Exception e) {
			return;
		}
	}
}
