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.*;
import java.util.Set;
import java.util.HashSet;

public class Recycler {
	public static void main(String[] args)
		throws IOException, FileNotFoundException {

		StreamTokenizer st = new StreamTokenizer(
				new FileReader(args[0]));

		FileWriter out = new FileWriter(args[1]);

		st.parseNumbers();
		if (st.nextToken() == StreamTokenizer.TT_EOF) eof_error();

		int numTestCases = (int) st.nval;
		int numDistinctPairs = 0;
		boolean twins = false;
		Set<Integer> partners = new HashSet<Integer>();

		for (int t = 0; t < numTestCases; ++t) {

			if (st.nextToken() == StreamTokenizer.TT_EOF) eof_error();
			int A = (int) st.nval;
			if (st.nextToken() == StreamTokenizer.TT_EOF) eof_error();
			int B = (int) st.nval;

			for (int i = A; i < B; ++i) {

				String curNumberString = String.valueOf(i);

				for(int j = 1; j < curNumberString.length(); ++j) {

					String sub1 = curNumberString.substring(j);
					String sub2 = curNumberString.substring(0, j);

					String test = sub1 + sub2;


					if (Integer.valueOf(test) > i &&
							Integer.valueOf(test) <= B) {

						if (! partners.contains(Integer.valueOf(test))) {
							++numDistinctPairs;
							partners.add(Integer.valueOf(test));
						}

					}

				}

				partners.clear();
			}
			out.write("Case #" + (t+1) + ": " + numDistinctPairs + "\n");
			numDistinctPairs = 0;
		}

		out.close();
	}

	private static void eof_error() {
		throw new RuntimeException("Unexpected end of file reached");
	}
}
