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.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
public class C {

	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(input.readLine());

		for(int j=0;j<n;j++){
			char[] numbers;
			char[] newNumbers;
			int newNumber=-1;
			int count = 0;

			String AB[] = input.readLine().split(" ");
			int A = Integer.parseInt(AB[0]);
			int B = Integer.parseInt(AB[1]);


			for(Integer original= B; original>A;original--){
				numbers = original.toString().toCharArray();
				perm:
					do{
						newNumbers = new char[numbers.length];
						newNumbers[0]=numbers[numbers.length-1];

						for(int i=1; i<numbers.length ;i++){
							newNumbers[i]=numbers[i-1];
						}
						numbers = newNumbers.clone();
//						if(numbers[0]=='0'){
//							continue perm;
//						}
						newNumber = charToInt(newNumbers);
						if (newNumber>B || newNumber<A){
							continue perm;
						}
						if(newNumber<=B && newNumber>=A && newNumber<original){
							count++;
							//System.out.print(newNumber+"\n");
						}
					}while(newNumber!=original);
			}
			System.out.print("Case #" +(j+1) + ": " + count +"\n");
		}
	}
	public static int charToInt(char[] number){
		int value=0;
		for(int i=0;i<number.length;i++){
			value+= (number[number.length-1-i]-48)*Math.pow(10, i);
		}
		return value;
	}

}
