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

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Stack;


public class Main {

	/**
	 * @param args
	 */
	static int recyclePair(int A, int B){
		int pairCount =0;
		HashSet<Integer> hs = new HashSet<Integer>();
		for(int x=A;x<B;x++){
			hs.clear();
			List<Integer> digits = getDigits(x);
			for(int i =1;i<digits.size();i++){
				int no = 0, k=i;
				for(int j= 0;j<digits.size();j++){
					no = no*10 + digits.get(k); k = (k+1)%digits.size();
				}
				if((x<no)&&(no<=B)&&(!hs.contains(no))){
					pairCount++;
					hs.add(no);
				}
			}
		}
		
		return pairCount;
	}
	
	
	
	
	static List<Integer> getDigits(int x){
		List<Integer> list = new ArrayList<Integer>();
		Stack<Integer> st = new Stack<Integer>();
		while(x>0){
			st.push(x - ((int)(x/10))*10);
			x /= 10;
		}
		
		
		while(!st.isEmpty()){
			list.add(st.pop());
		}
		return list;
	}
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = null;
		BufferedWriter bw = null;
		try{
			sc = new Scanner(new File("input.txt"));
			bw = new BufferedWriter(new FileWriter("gcj3a.txt"));
			int T = sc.nextInt();
			int A, B, x;
			for(int i=0;i<T;i++){
				A = sc.nextInt();
				B = sc.nextInt();
				bw.write("Case #"+(i+1)+": "+recyclePair(A, B));bw.newLine();
			}
		}catch(Exception e){}
		finally{
			try{
				sc.close();bw.close();
			}catch(Exception e){}
		}
		/*
		recyclePair(12345, 12345);
		System.out.println();
		System.out.println(getDigits(120980));
		*/
	}

}
