import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

package com.numbers.recycle.algo;

import java.util.ArrayList;
import java.util.List;

public class Recycler {
	
	public int getRecycledNumberCount(String[] wordsInOrder){
		int beginNumber = Integer.valueOf(wordsInOrder[0]);
		int endNumber = Integer.valueOf(wordsInOrder[1]);
		int counter = 0;
		for(int current = beginNumber ; current <= endNumber ; current++)
		{
			List<Integer> recycledNumbers = getRecycledNumbers(current);
			for(int recycledNumber: recycledNumbers)
			{
				if(beginNumber <= current 
						&& current < recycledNumber
						&& recycledNumber <= endNumber)
					counter ++;
			}
		}
		return counter;
	}

	private List<Integer> getRecycledNumbers(int i) {
		List<Integer> returnList = new ArrayList<Integer>();
		String number = String.valueOf(i);
		int length = number.length();
		for(int counter = 1; counter < length; counter++)
		{
			number = number.charAt(length - 1) + number.substring(0,length - 1);
			int numValue = Integer.valueOf(number);
			if(!returnList.contains(numValue))
			returnList.add(Integer.valueOf(number));
		}
		return returnList;
	}

}
