import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class codejam_C_small {
	public static void main(String[] args) throws IOException {
		FileUtil.Timer.start();

		Scanner scanner = new Scanner(System.in);
		int numOfTest = scanner.nextInt();
		scanner.nextLine();
		String[] testCases = new String[numOfTest];
		for (int i = 0; i < numOfTest; i++) {
			testCases[i] = scanner.nextLine();
		}

		String[] finalResult = new String[numOfTest];
		for (int i = 0; i < numOfTest; i++) {
			String testCase = testCases[i];
			String result = runTestCase(testCase);
			finalResult[i] = FileUtil.formatTestResult(i, result);
			System.out.println(finalResult[i]);
		}
		FileUtil.Timer.stop();
	}

	private static String runTestCase(String testCase) {
		String[] splits = testCase.split(" ");
		long lowerBound = FileUtil.toNumber(splits[0]);
		long upperBound = FileUtil.toNumber(splits[1]);
		if (lowerBound > upperBound || upperBound < 10) {
			return "0";
		}

		int count = 0;
		// System.out.println("Lower: " + lowerBound + ", Upper: " +upperBound
		// );
		Map<Long, Long> cachedMap = new HashMap<Long, Long>();
		for (long start = lowerBound; start < upperBound; start++) {
			long intermidate = start;
			int numOfShift = String.valueOf(start).length() - 1;
			if (numOfShift < 0) {
				continue;
			}

			for (int i = 0; i < numOfShift; i++) {
				intermidate = shiftLongNumber(intermidate, numOfShift);
				if (intermidate > start && intermidate <= upperBound) {
					if ((cachedMap.containsKey(intermidate) && cachedMap.get(
							intermidate).equals(start))
							|| (cachedMap.containsKey(start) && cachedMap.get(
									intermidate).equals(intermidate))) {
						// System.out.println(start + ", " + intermidate);
					} else {
						cachedMap.put(intermidate, start);
						count++;
					}
				}
			}
		}
		return String.valueOf(count);
	}

	private static long shiftLongNumber(long input, int numOfShift) {
		long lastDigit = input % 10;
		long reminder = input / 10;
		return (long) (Math.pow(10, numOfShift) * lastDigit + reminder);
	}
}
