import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package qualification;

import java.util.ArrayList;
import java.util.List;
import java.util.Vector;

import core.ExtendedBufferedReader;
import core.Template;

public class ProblemC extends Template {

	int _numberOfCases;
	Vector<List<Integer>> _cases = new Vector<List<Integer>>();

	@Override
	public void feedData(ExtendedBufferedReader iR) {
		// TODO Auto-generated method stub

		_numberOfCases = iR.getIntFL();

		for (int i=0; i<_numberOfCases; i++){

			_cases.add(iR.getIntListFL());

		}

	}

	public String rotRight(String iData){
		return iData.charAt(iData.length()-1)+iData.substring(0,iData.length()-1);
	}

	@Override
	public StringBuffer applyMethods() {
		// TODO Auto-generated method stub

		StringBuffer aBF = new StringBuffer();

		for (int i=0; i<_cases.size(); i++){

			List<Integer> aCase = _cases.elementAt(i);

			int A = aCase.get(0);
			int B = aCase.get(1);
			int count = 0;
			
			for (int n=A; n<=B; n++){



				String repN = (new Integer(n)).toString();
				String repM = repN;
				int aSize = repN.length();

				if (aSize>1) {

					List<Integer> aMExists = new ArrayList<Integer>();
					
					for (int j=0;j<aSize;j++) {

						repM = rotRight(repM);

						int rN = new Integer(repN).intValue();
						int rM = new Integer(repM).intValue();
						
						if ((rN<rM) && (rM<=B) && (!aMExists.contains(new Integer(rM)))) {
							count++;
							aMExists.add(new Integer(rM));
							//System.out.println("n="+repN+",m="+repM);
						} 
						
					}

				}
			}
			aBF.append("Case #"+(i+1)+": "+count+"\n");

		}

		return aBF;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		new ProblemC().play(args);

	}

}
