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.BufferedInputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class code_jam {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		File file = new File("C:\\test.in");
	    FileInputStream fis = null;
	    BufferedInputStream bis = null;
	    DataInputStream dis = null;
	    
	    try {
		    fis = new FileInputStream(file);
		    bis = new BufferedInputStream(fis);
		    dis = new DataInputStream(bis);
		    
		    int cc = Integer.parseInt(dis.readLine());
		    int i;
		    for (i=0;i<cc;i++) {
		    	String range = dis.readLine();
		    	int from = Integer.parseInt(range.substring(0, range.indexOf(' ')));
		    	int to = Integer.parseInt(range.substring(range.indexOf(' ')+1, range.length()));
		    	int count = 0;
		    	int x,y;
		    	for (x=from; x < to; x++){		    		
		    		int length = String.valueOf(x).length();
		    		for (y = 0; y < length-1; y++){
		    			int head = (int) (x / Math.pow(10, y+1));
		    			int tail = (int) (x % Math.pow(10, y+1));
		    			int new_num = (int) (tail * Math.pow(10, length-y-1) + head);
		    			if ((new_num <= to) && (new_num > x))
		    				count++;
		    		}
		    	}
		    	System.out.println("Case #" + (i+1) + ": " + count);
		    }
	      fis.close();
	      bis.close();
	      dis.close();

	    } catch (FileNotFoundException e) {
	      e.printStackTrace();
	    } catch (IOException e) {
	      e.printStackTrace();
	    }
		
		
	}

}
