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

public class Main {

	public static void main(String[] args) {
		List<String> lstLinesOutput = new ArrayList<String>();
		int iNbAnswers;
		List<String> lstLinesInput = FileReaderHandler.openFile("/home/guillaume/Bureau/input");
		
		
		for(int n=1;n< Integer.parseInt(lstLinesInput.get(0)) + 1;n++){
			String sOutput = "Case #" + n + ": ";
			List<String> box = new ArrayList<String>();
			iNbAnswers = 0;
			String sInput = lstLinesInput.get(n);
			String[] hInput = sInput.split(" ");
			//to int array
			int[] iInput = new int[hInput.length];
			for(int i=0;i < hInput.length;i++){
				iInput[i] = Integer.parseInt(hInput[i]);
			}
			
			int iMin = iInput[0];
			int iMax = iInput[1];
			for(int i=iMin;i<iMax + 1;i++){
				String s = "" + i;
				for(int j=1; j<s.length();j++){
					String depl = s.substring(s.length() -j);
					String sRecycled = depl + s.substring(0, s.length() - j);
					int iToTest = Integer.parseInt(sRecycled);
					if(iToTest <= iMax && iToTest > i && !box.contains(i + "-" + iToTest)){
						box.add(i + "-" + iToTest);
						iNbAnswers++;
					}
				}
			}
			sOutput += iNbAnswers;
			lstLinesOutput.add(sOutput);
		}
		
		if(Integer.parseInt(lstLinesInput.get(0)) != lstLinesOutput.size()){
			System.out.println("ERROR!!!");
		}
		FileWriterHandler.writeToFile(lstLinesOutput);
	}
}