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();
    }
}

import java.util.Hashtable;
import java.util.Scanner;

class RecycleResult{
	private int lowerBound, upperBound, numberOfDigits;
	public RecycleResult(int a, int b, int d){
		lowerBound = a;
		upperBound = b;
		numberOfDigits = d;
	}
	public int solve(){
		int count = 0;
		for (int i = lowerBound; i < upperBound; i++){
			int p = i;
			Hashtable<Integer, Integer> hash = new Hashtable<Integer, Integer>();
			for (int j = 1; j < numberOfDigits; j++){
				p = moveToFront(p);
				if ((p <= upperBound) && (p > i) && (!(p == i)) && (!(hash.containsValue(p)))){
					count++;
					hash.put(count, p);
				}
			}
		}
		return count;
	}
	public int moveToFront(int z){
		int lastDigit = z % 10;
		int otherDigits = (z / 10);
		for (int i = 0; i < numberOfDigits - 1; i++){
			lastDigit = lastDigit * 10;
		}
		return otherDigits + lastDigit;
	}
}
public class Recycle {
	public static void main(String[] args) {
		int numberOfCases;
		Scanner myScanner = new Scanner(System.in);
		int a, b;
		numberOfCases = myScanner.nextInt();
		RecycleResult myResult;
		
		for (int i = 0; i < numberOfCases; i++){
			a = myScanner.nextInt();
			b = myScanner.nextInt();
			int length = String.valueOf(a).length();
			myResult = new RecycleResult(a, b, length);
			int count = myResult.solve();
			System.out.println("Case #" + (i+1) + ": " + count);
		}
	}
}
