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);
		}

	}
}

package glycine.gcj2012.qr;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class ProblemC {
	private static Set<String> set = new HashSet<String>();

	private static void countRecycle(String numStr, int min, int max) {
		int num = Integer.valueOf(numStr);

		for (int i = 1; i < numStr.length(); ++i) {
			String frontStr = numStr.substring(0, i);
			String backStr = numStr.substring(i, numStr.length());
			if (backStr.charAt(0) == '0') {
				continue;
			}
			String newNumStr = backStr + frontStr;
			int newNum = Integer.valueOf(newNumStr);
			if (newNum >= min && newNum <= max && newNum > num) {
				// System.out.println( numStr + ", " + newNumStr);
				set.add(numStr + ":" + newNumStr);
			}

		}
		return;
	}

	private static void solve(String minStr, String maxStr) {
		set.clear();
		int min = Integer.valueOf(minStr);
		int max = Integer.valueOf(maxStr);
		int length = minStr.length();
		for (int i = min; i <= max; ++i) {
			String numStr = Integer.toString(i);
			countRecycle(numStr, min, max);

		}

		// System.out.println("result = " + set.size());
	}

	public static void main(String[] args) throws IOException {
		if (args.length != 1) {
			System.err.println("Usage: <program> inputFilename");
			return;
		}
		BufferedReader reader = new BufferedReader(new FileReader(args[0]));
		String line = reader.readLine();
		int times = Integer.parseInt(line);
		for (int i = 0; i < times; ++i) {
			line = reader.readLine();
			String[] tokens = line.split(" ");
			solve(tokens[0], tokens[1]);
			System.out.println("Case #" + (i+1) + ": " + set.size());

		}
	}

}
