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 gcj;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;

public abstract class SolverBase {

    public static final String TOKEN_SEPARATOR = " ";

    public static final String IMPOSSIBLE = "IMPOSSIBLE";

    public String problemName;

    public boolean verbose = false;

    public SolverBase(String problemName) {
        this.problemName = problemName;
    }

    public void solve(InputStream in, PrintStream out) throws Exception {
        InputStreamReader isr = new InputStreamReader(in);
        BufferedReader reader = new BufferedReader(isr);
        long N = Long.parseLong(reader.readLine());
        for (long i = 1; i <= N; i++) {
            out.print("Case #" + i + ": ");
            solveSingle(reader, out);
        }
    }

    public abstract void solveSingle(BufferedReader reader, PrintStream out) throws Exception;

    public long[] readSingleLineLongArray(BufferedReader reader) throws Exception {
        String[] longsAsStrings = readSingleLineStringArray(reader);
        long[] longs = new long[longsAsStrings.length];
        for (int i = 0; i < longsAsStrings.length; i++) {
            longs[i] = Long.parseLong(longsAsStrings[i]);
        }
        return longs;
    }

    public int[] readSingleLineIntArray(BufferedReader reader) throws Exception {
        String[] intsAsStrings = readSingleLineStringArray(reader);
        int[] ints = new int[intsAsStrings.length];
        for (int i = 0; i < intsAsStrings.length; i++) {
            ints[i] = Integer.parseInt(intsAsStrings[i]);
        }
        return ints;
    }

    public String[] readSingleLineStringArray(BufferedReader reader) throws Exception {
        String line = reader.readLine();
        if (verbose) {
            System.out.println("Reading line " + line);
        }
        return line.split(TOKEN_SEPARATOR);
        // return StringUtils.split(line, TOKEN_SEPARATOR);
    }

    public String[][] readStringArrays(BufferedReader reader, int lines) throws Exception {
        String[][] arrays = new String[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineStringArray(reader);
        }
        return arrays;
    }

    public char[][] readCharArrays(BufferedReader reader, int lines) throws Exception {
        char[][] arrays = new char[lines][];
        for (int i = 0; i < lines; i++) {
            String line = reader.readLine();
            arrays[i] = line.toCharArray();
        }
        return arrays;
    }

    public long[][] readLongArrays(BufferedReader reader, int lines) throws Exception {
        long[][] arrays = new long[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineLongArray(reader);
        }
        return arrays;
    }

    protected void check(boolean b) {
        if (!b) {
            throw new IllegalStateException("Check failed");
        }
    }
}
