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.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Scanner;

public class C {
	private Scanner in;
	
	private PrintWriter out;
	
	private final String file = "C";
	
	public C() throws IOException {
		try {
			System.setIn(new FileInputStream("io/q/" + file));
			System.setOut(new PrintStream(new FileOutputStream("io/q/" + file + ".out")));
		} catch (FileNotFoundException e) {
			System.err.println(e.getMessage());
		}
		
		in = new Scanner(new BufferedInputStream(System.in));
		
		out = new PrintWriter(System.out);
		
		// for case
		int T = in.nextInt(), t = 1;
		int A, B, l, sum, total, currentNumberChar, currentNumber;
		HashMap<Integer, Boolean> map;
		
		while (T-- > 0) {
			A = in.nextInt();
			B = in.nextInt();
			map = new HashMap<Integer, Boolean>(B - A + 1);
			total = 0;
			
			if (A > 9) {
				final int size = (A + "").length() - 1;
				final int exp = (int) Math.pow(10, size);
				
				for (int nextNumber = A; nextNumber <= B; nextNumber++) {
					// processed
					if (null != map.get(nextNumber)) continue;
					
					// process
					map.put(nextNumber, true);
					
					currentNumber = nextNumber;
					sum = 0;
					
					for (l = 0; l++ < size;) {
						currentNumberChar = currentNumber % 10;
						currentNumber = currentNumberChar*exp + (int)Math.floor(currentNumber/10);
												
						if ((currentNumber >= A) && (currentNumber <= B)) {
							if (null == map.get(currentNumber)) {
								map.put(currentNumber, true);
								sum++;
							}
						}
						
					}
					total += sum + sum*(sum-1)/2;
				}
			}			
			out.printf("Case #%d: %d%n", t++, total);
		}
		in.close();
		out.flush();
		out.close();
	}
	
	public static void main(String[] args) throws IOException {
		new C();
	}
}