import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.BufferedReader;
import java.io.File;
import java.util.HashMap;
import java.util.StringTokenizer;
import java.io.FileReader;
public class C {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws Exception  {
		BufferedReader reader = null;
		String fileName = "C-small-attempt2.in";
		String outputFileName=fileName.replace(".in", ".out");
		reader=new BufferedReader(new FileReader(fileName));
		File outFile=new File(outputFileName);
		outFile.createNewFile();
		int T = Integer.parseInt(reader.readLine());
		for (int i = 1; i <=T; i++) {
			StringTokenizer t=new StringTokenizer(reader.readLine()," ");
			int start=Integer.parseInt(t.nextToken());
			int end=Integer.parseInt(t.nextToken());
			int count=0;
			HashMap<String,String> map=new HashMap<String,String>();
			for(int j=start;j<end;j++){
				String s=j+"";
				for(int k=1;k<s.length();k++){
					String ss=s.substring(s.length()-k);
					String es=s.substring(0,s.length()-k);
					if(ss.startsWith("0"))continue;
					int num=Integer.parseInt(ss+""+es);
					if(num<=end && num>=start && num>j){
						String key=j+"_"+num;
						if(map.get(key)==null){
							map.put(key, key);
							count++;
						}
					}
				}
			}
			System.out.println("Case #"+i+": "+count);
		
		}

	}

}
