package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.io.*;

public class Test3 {

	final static String INPUT_FILE_NAME = "input3";

	int T = 0;
	int q = 0;

	public static void main(String args[]) {
		try {
			Test3 tst = new Test3();
			tst.getInput();
		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}

	private void getInput() throws Exception {
		File file = new File(INPUT_FILE_NAME);
		FileReader fis = new FileReader(file);
		BufferedReader br = new BufferedReader(fis);
		String strT = br.readLine();
		T = getInt(strT);

		for (int i=0; i<T; i++) {
			String strHead = br.readLine();
			String[] AandB = strHead.split(" ");
			int A = getInt(AandB[0]);
			int B = getInt(AandB[1]);

			//list kakunou
			execuse(i, A, B);
		}
	}

	private void execuse(int t, int A, int B) {
		int rtn = 0;
		int[] counts = new int[B+1];
		for (int i=0; i<=B;i++) {
			counts[i] = 0;
		}

		for (int i=A; i<=B;i++) {
			if (sortNumber(i)>0) {
				counts[sortNumber(i)]++;
			}
		}

		for (int i=0; i<=B;i++) {
//System.out.println("i="+i+" counts="+counts[i]);
			rtn += counts[i] * (counts[i]-1) / 2;
		}

		System.out.println("Case #"+(t+1)+": "+rtn);
		//System.out.println("Hello WorldI");
	}

	private int sortNumber(int i) {
		String str = String.valueOf(i);
		int keta = str.length();

		int min = i;
		String slideStr = str;
		for (int k=0; k<keta; k++) {
			slideStr = slideStr.substring(1)+slideStr.substring(0,1);
			if (min > getInt(slideStr)) {
				min = getInt(slideStr);
			}
		}

		return min;
	}

	private int getInt(String a) {
		return Integer.parseInt(a, 10);
	}

	private int getIntx(String a) {
		if (a.equals(".")) {
			return 0;
		}
		return 1;
	}

}
