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.util.*;

public class Recycle
{
    public static void main(String args[])
    {
        int uBound, lBound, count=0, caseNo=1;

        Scanner input = new Scanner(System.in);

        input.nextLine();

        while(true)
        {
            lBound = input.nextInt();
            uBound = input.nextInt();

            for(int i=lBound; i<=uBound; i++)
            {
                int numDigits = new Integer(i).toString().length();
                int[] pastPairs = new int[numDigits-1];
                for(int j=1; j<numDigits; j++)
                {
                    int rotatedInt = rotateInt(i,j);
                    if(rotatedInt>i && rotatedInt<=uBound)
                    {
                        for(int k=0; k<numDigits-1; k++)
                        {
                            if(rotatedInt==pastPairs[k])
                            {
                                count--;
                            }
                        }
                        count++;
                    }
                    pastPairs[j-1] = rotatedInt;
                }
            }
            System.out.printf("Case #%d: %d\n",caseNo,count);
            count=0; caseNo++;
        }
    }

    static int rotateInt(int number, int rotate)
    {
        String numStr = new Integer(number).toString();
        String last = numStr.substring(numStr.length()-rotate);
        String rest = numStr.substring(0,numStr.length()-rotate);
        numStr = last.concat(rest);
        return Integer.parseInt(numStr);
    }
}

// Called with java Recycle < in.in > out.txt
