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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.Arrays;

/**
 * Recycled Numbers
 * @author shibink
 *
 */
public class Recycle {

    public static int getCount(String str) {
        int count = 0;
        int tmp = 0;
        int numDigits = 0;

        if ((str == null) || (str.isEmpty())) {
            return count;
        }

        String[] strArray = str.split(" ");
        
        // It should be 2
        if (strArray.length != 2) {
            return 0;
        }
        int num1 = Integer.parseInt(strArray[0]);
        int num2 = Integer.parseInt(strArray[1]);
        tmp = num1;

        // Find number of digits in num1 & num2
        while (tmp > 0) {
            numDigits++;
            tmp = tmp / 10;
        }
        
        int arr[] = new int[numDigits];
        int cnt;
        for (int i = num1; i <= num2; i++) {
            Arrays.fill(arr, 0);
            cnt = 0;
            for (int val = i, j = 1; j < numDigits; j++) {
                tmp = val % 10;

                if (tmp == 0) {
                    val = val/10;
                    continue;
                }
                val = (int) (tmp * Math.pow(10, (numDigits - 1)) + (val / 10));
                for (int k=0; k<cnt; k++) {
                    if (val == arr[cnt]) {
                        continue;
                    }
                }
                arr[cnt++] = tmp;
                if ((val > i) && (val <= num2)) {
                    count++;
                }
            }
        }
        return count;
    }

    public static void processFile(String fileName) throws IOException {
        FileInputStream fstream = new FileInputStream(fileName);
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));

        // use buffering
        Writer output = new BufferedWriter(new FileWriter("output.txt"));

        try {
            String strLine = null;
            int numRecycle = 0;
            int count = 0;

            if ((strLine = br.readLine()) != null) {
                count = Integer.parseInt(strLine);
            }
            // Read File Line By Line
            for (int i = 1; i <= count; i++) {
                if ((strLine = br.readLine()) == null) {
                    return;
                }

                numRecycle = getCount(strLine);
                System.out.println("Case #" + i + ": " + numRecycle);

                StringBuffer outBuff = new StringBuffer("Case #" + i + ": " + numRecycle + "\n");
                output.write(outBuff.toString());
            }

        } finally {
            // Close the input stream
            in.close();
            output.close();
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        String fileName = "input.in";
        try {
            processFile(fileName);
        } catch (IOException e) {
            // TODO Log error
        }
        return;
    }
}
