import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.*;
import java.util.*;

public class GoogleQual2012C
{   public static void main(String[] args) throws Throwable
    {   new GoogleQual2012C();
    }
    
    public GoogleQual2012C() throws Throwable
    {   Scanner in = new Scanner(new File("C-large.in"));
        PrintWriter out = new PrintWriter(new FileWriter("C-large.out"));
        int numTests = in.nextInt();
        for (int i = 0; i < numTests; i++)
        {   int a = in.nextInt();
            int b = in.nextInt();
            int total = 0;
            for (int curr = a; curr < b; curr++)
            {   int numDigits = this.numDigits(curr);
                int[] alreadySeen = new int[numDigits - 1];
                for (int numToTake = 1; numToTake < numDigits; numToTake++)
                {   int recycled = this.moveDigits(curr, numToTake);
                    if (recycled > curr && recycled <= b && !this.contains(alreadySeen, recycled))
                    {   total++;
                        alreadySeen[numToTake - 1] = recycled;
                    }
                }
            }
            out.println("Case #" + (i + 1) + ": " + total);
        }
        out.close();
    }
    
    private int numDigits(int n)
    {   int toRet = 1;
        while (n >= 10)
        {   n /= 10;
            toRet++;
        }
        return toRet;
    }
    
    private int moveDigits(int num, int numToTake)
    {   int exp = this.numDigits(num) - numToTake;
        int base = 1;
        for (int i = 0; i < numToTake; i++)
        {   base *= 10;
        }
        int otherBase = 1;
        for (int i = 0; i < exp; i++)
        {   otherBase *= 10;
        }
        return (num / base) + (num % base) * otherBase;
    }
    
    private boolean contains(int[] array, int value)
    {   for (int i = 0; i < array.length; i++)
        {   if (array[i] == value)
            {   return true;
            }
        }
        return false;
    }
}