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.FileNotFoundException;
import java.io.FileReader;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;

public class ProblemCC {

	/**
	 * @param args
	 * @throws FileNotFoundException
	 */
	public static boolean check(String s) {
		for (int i = 0; i < s.length() - 1; i++) {
			if (s.charAt(i) != s.charAt(i + 1))
				return true;
		}
		return false;
	}

	public static void main(String[] args) throws FileNotFoundException {
		Scanner in = new Scanner(new FileReader("C.in"));
		PrintWriter out = new PrintWriter("Clarge.out");
		int num = in.nextInt();
		for (int CASE = 1; CASE <= num; CASE++) {
			int a = in.nextInt();
			int b = in.nextInt();
			HashSet<String> hs = new HashSet<String>();
			for (int i = a; i <= b; i++) {
				String s = i + "";
				if (check(s) && s.length() > 1) {
					for (int k = s.length() - 2, j = 0; k >= 0 && j < s.length() - 1; j++, k--) {
						String newS = s.substring(k + 1) + s.substring(0, k + 1);
						int newInt = Integer.parseInt(newS);
						if (newInt <= b && i < newInt && s.length() == (newInt + "").length() && !newS.equals(s)) {
							if (i < Integer.parseInt(newS))
								hs.add(i + " " + newS);
							else
								hs.add(newS + " " + i);
						}
					}
				}
			}
			out.println("Case #" + CASE + ": " + hs.size());
		}
		out.close();
	}
}
