import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}


import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Iterator;


public class gjam {
	
	public static void main(String[] args)
	{
	
		int TestCases = 0;
		int currentCase = 0;
		
		try
		{
			
		
			FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
			DataInputStream dstream = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(dstream));
			
			String inputStr = br.readLine();
			
			TestCases = Integer.parseInt(inputStr);
			
			while(currentCase != TestCases)
			{
				ArrayList<Integer> results = new ArrayList<Integer>();
				inputStr = br.readLine();
				int result = 0;
				
				String[] inputs = inputStr.split(" ");
				int size = inputs[0].length();
				int A = Integer.parseInt(inputs[0]);
				int B = Integer.parseInt(inputs[1]);
				if(A >= 10 && B > A)
				for(int i = A; i <= B; i++)
				{
					for(int j = 1; j <= size; j++)
					{
						int moved = moveDigits(j,i);
						
						if(A <= i && i < moved && moved <= B)
						{
							
							results.add(i);
							results.add(moved);
							result++;
						}
						
					}
					
					
				}
				
				System.out.println("Case #" + (currentCase +1) + ": " + result);
				currentCase++;
			}
			
			
		}
		catch(Exception e)
		{
			System.err.println("Err: " + e.getMessage());
		}
		
	}
	public static int moveDigits(int numTomove,int input)
	{
		String original = "" + input;
		int length = original.length();
		String sub1 = original.substring(length - numTomove);
		String sub2 = original.substring(0,length - numTomove);
		
		String output = sub1 + sub2;
		
		return Integer.parseInt(output);
	}
	
}
