import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class C {
	private static final String PROBLEM_NAME = "C-large";

	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader r = new BufferedReader(new FileReader(PROBLEM_NAME + ".in"));
		BufferedWriter w = new BufferedWriter(new FileWriter(PROBLEM_NAME + ".out"));
		int testsNumber = Integer.parseInt(r.readLine());
		for (int i = 0; i < testsNumber; ++i) {
			String[] line = r.readLine().split(" ");
			int a = Integer.parseInt(line[0]);
			int b = Integer.parseInt(line[1]);
			long res = 0L;
			
			int len = 0;
			int tmp = a;
			while (tmp != 0) {
				++len;
				tmp /= 10;
			}
			if (a == 0) {
				len = 1;
			}
			
			int m = 1;
			for (int j = 1; j < len; ++j) {
				m *= 10;
			}
			
			while (a < b) {
				Set<Integer> counted = new HashSet<Integer>();
				int t = a;
				boolean sh = false;
				for (int j = 1; j < len; ++j) {
					int x = t % 10;
					if (x == 0) {
						sh = true;
						t = t / 10;
					} else {
						sh = false;
						t = x * m + t / 10;
					}
					if (!sh && t <= b && t > a && !counted.contains(t)) {
						counted.add(t);
						++res;
					}
				}
				++a;
			}
			
			w.write("Case #" + (i + 1) + ": ");
			w.write(res + "");
			w.newLine();
		}
		r.close();
		w.close();
	}
}
