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.Scanner;
import java.io.*;

public class Recycled {

  public static void main(String[] args) throws FileNotFoundException, IOException {
    Scanner input = new Scanner(new File(args[0]));
    Scanner lin;
    int lines = 0;
    
    if (input.hasNextInt()) {
      lines = input.nextInt();
      input.nextLine();
    }
    
    String nLine;
    String numtostr;
    int tonumber;
    int count;
    int strl;
    int a, b;
    int addednums[];
    boolean didrepeat;
    
    PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));


    for (int i = 0; i < lines; i++) {
      nLine = input.nextLine();
      lin = new Scanner(nLine);
      out.print("Case #" + (i + 1) + ": ");
      
      a = lin.nextInt();
      b = lin.nextInt();
      
      count = 0;
      
      for (int k = a; k <= b; k++) {
        numtostr = "" + k;
        strl = numtostr.length();
        addednums = new int[strl];
        for (int j = 0; j < strl; j++) {
          didrepeat = false;
          tonumber = Integer.parseInt(numtostr.substring(j, strl) + numtostr.substring(0, j));
          addednums[j] = tonumber;
          for (int l = 0; l < j; l++) {
            if (tonumber == addednums[l]) didrepeat = true;
          }
          if (k > tonumber && tonumber >= a && didrepeat == false) {
            count++;
          }
        }
      }
      
      out.println(count);
      
    }
    
    out.close();
  
  }

}