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.Scanner;


public class Shift {
	public static void main(String[] args) {
		int a,b,c,d=10,e=0,x,T,j;
		int inf,sup,res=0;
		Scanner l = new Scanner(System.in);
		T=l.nextInt();
		for(j=0;j<T;j++){
			inf=l.nextInt();
			sup=l.nextInt();	
			res=0;
			for(int k=inf;k<=sup;k++){
				x=k;
				int vixi=k;
				c=0;
				e=0;
				while(vixi>0){
					vixi=vixi/10;
					e++;		
				}
				for(int i=0;i<e&&c!=k;i++){
					a=x%d;
					b=x/d;
					c= (a*(int)Math.pow(10, e-1)+b);
					if((c>k)&&(c<=sup)&&(c>=inf))
						res++;
					//System.out.println(c);
					x=c;
				}
			}
			System.out.println("Case #"+(j+1)+": "+res);
		}
	
	}
}
