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);
		}

	}
}



///REMOVE ALL OUTPUT AND USE STRINGTOKENIZER!


/*
ID: mfranzs1
LANG: JAVA
TASK: RecycledNumbers
*/
import java.io.*;
import java.util.*;

public class RecycledNumbers {
	static BufferedReader f;
	public static void main (String [] args) throws IOException {
		long unixTime = System.currentTimeMillis();
		// Use BufferedReader rather than RandomAccessFile; it's much faster
		f = new BufferedReader(new FileReader("RecycledNumbers.in"));
	                                                  // input file name goes above
	    PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("RecycledNumbers.out")));
	    // Use StringTokenizer vs. readLine/split -- lots faster
	    //StringTokenizer st = new StringTokenizer(f.readLine()," ");	    	
    	//int i = Integer.parseInt(st.nextToken());
	    
	    int cases=Integer.parseInt(f.readLine());
	    for(int c=0;c<cases;c++){
	    	StringTokenizer st = new StringTokenizer(f.readLine()," ");	
	    	int A = Integer.parseInt(st.nextToken());
	    	int B = Integer.parseInt(st.nextToken());
	    	////System.out.println(A+" "+B);
	    	int numRecycled=0;
	    	for(int n=A;n<B;n++){
	    		numRecycled+=rec(n,B);
	    	}
	    	System.out.println("Case #"+(c+1)+": "+numRecycled);
	    	out.println("Case #"+(c+1)+": "+numRecycled);
	    }
	    
	    
	    
	    out.close();                                  // close the output file
	    
	    //System.out.println("Time elapsed (ms): "+(System.currentTimeMillis()-unixTime));
	    
	    System.exit(0);                               // don't omit this!
	  }
	public static int rec(int n,int max){
		ArrayList<String> workingPairs = new ArrayList<String>();
		String stringN=""+n;
		for(int swap=1;swap<stringN.length();swap++){
			String next=stringN.substring(swap)+stringN.substring(0,swap);
			int m=Integer.parseInt(next);
			if(n<m&&m<=max&&(m+"").charAt(0)!='0'){
				String add=n+" "+m;
				if(!workingPairs.contains(add)){
					workingPairs.add(add);
				}
				//System.out.println(n+" "+m);
			}
			////System.out.println(next);
		}
		return workingPairs.size();
	}
}