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);
		}

	}
}

import java.io.*;
import java.util.Arrays;
import java.util.Locale;
import java.util.Scanner;

public class RecycledNumbers {
    // -ea âXmx256M âXss64M
    long A, B;

    private Object solve() throws Exception {
        long result = 0;
        for (long n = A; n < B; n++) {
            long d = 1;
            while (d <= n) d *= 10;
            d /= 10;

            long m = n;
            do {
                m = (m % d) * 10 + m / d;
                if (n < m && m <= B) {
                    result++;
                }
            } while (m != n);
        }
        return result;
    }

    private void load() throws Exception {
        A = nextLong();
        B = nextLong();
        log.print("A: " + A + ", B: " + B);
    }


    private static final String PREFIX = "C-large";
    private static final String PATH = "d:/gcjam12/qr/";
    private static final String POSTFIX_IN = ".in";
    private static final String POSTFIX_OUT = ".out";
    private static final PrintStream log = System.out;

    public static void main(String args[]) throws Exception {
        Locale.setDefault(Locale.US);
        InputStreamReader reader = new InputStreamReader(new BufferedInputStream(new FileInputStream(PATH + PREFIX + POSTFIX_IN)));
        PrintStream out = new PrintStream(new FileOutputStream(PATH + PREFIX + POSTFIX_OUT));
        Scanner in = new Scanner(reader);

        long t0 = System.nanoTime();
        int testCount = in.nextInt(); in.nextLine();
        for (int testIndex = 1; testIndex <= testCount; testIndex++) {
            log.printf("Data #%d: ", testIndex);

            RecycledNumbers s = new RecycledNumbers();
            s.in = in;
            s.load();
            s.in = null;
            log.println();

            long t1 = System.nanoTime();
            String result = "Case #" + testIndex + ": " + s.solve();

            out.println(result);
            log.println(result);
            log.printf("Time #%d: %.6f sec\n\n", testIndex, (System.nanoTime() - t1) / 1e9);
        }
        log.printf("Total time: %.6f sec", (System.nanoTime() - t0)/1e9);

        reader.close();
        out.close();
    }

    private Scanner in;
    private int nextInt() { return in.nextInt(); }
    private long nextLong() { return in.nextLong(); }
    private double nextDouble() { return Double.parseDouble(in.next()); }
    private String nextLine() { return in.nextLine().trim(); }
    private void skipLine() { in.nextLine(); }
    private String next() { return in.next().trim(); }
    private int[] nextIntArray(int size) { int[] a = new int[size]; for (int i = 0; i < size; i++) a[i] = in.nextInt(); return a; }
    private long[] nextLongArray(int size) { long[] a = new long[size]; for (int i = 0; i < size; i++) a[i] = in.nextLong(); return a; }
    private double[] nextDoubleArray(int size) { double[] a = new double[size]; for (int i = 0; i < size; i++) a[i] = Double.parseDouble(in.next());  return a; }
    private String[] nextLineArray(int size) { String[] a = new String[size]; for (int i = 0; i < size; i++) a[i] = in.nextLine().trim(); return a; }
    private String[] nextTokenArray(int size) { String[] a = new String[size]; for (int i = 0; i < size; i++) a[i] = in.next().trim(); return a; }
}
