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.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.Arrays;

/**
 * Recycled Numbers
 * @author shibink
 *
 */
public class Recycle {

    public static int getCount(String str) {
        int count = 0;
        long tmp = 0;
        int numDigits = 0;

        if ((str == null) || (str.isEmpty())) {
            return count;
        }

        String[] strArray = str.split(" ");
        
        // It should be 2
        if (strArray.length != 2) {
            return 0;
        }
        long num1 = Long.parseLong(strArray[0]);
        long num2 = Long.parseLong(strArray[1]);
        tmp = num1;

        // Find number of digits in num1 & num2
        while (tmp > 0) {
            numDigits++;
            tmp = tmp / 10;
        }
        
        long arr[] = new long[numDigits];
        int cnt;
        for (long i = num1; i <= num2; i++) {
            Arrays.fill(arr, 0);
            cnt = 0;
            for (long val = i, j = 1; j < numDigits; j++) {
                tmp = val % 10;

                if (tmp == 0) {
                    val = val/10;
                    continue;
                }
                val = (int) (tmp * Math.pow(10, (numDigits - 1)) + (val / 10));
                for (int k=0; k<cnt; k++) {
                    if (val == arr[cnt]) {
                        continue;
                    }
                }
                arr[cnt++] = tmp;
                if ((val > i) && (val <= num2)) {
                    count++;
                }
            }
        }
        return count;
    }

    public static void processFile(String fileName) throws IOException {
        FileInputStream fstream = new FileInputStream(fileName);
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));

        // use buffering
        Writer output = new BufferedWriter(new FileWriter("output.txt"));

        try {
            String strLine = null;
            int numRecycle = 0;
            int count = 0;

            if ((strLine = br.readLine()) != null) {
                count = Integer.parseInt(strLine);
            }
            // Read File Line By Line
            for (int i = 1; i <= count; i++) {
                if ((strLine = br.readLine()) == null) {
                    return;
                }

                numRecycle = getCount(strLine);
                System.out.println("Case #" + i + ": " + numRecycle);

                StringBuffer outBuff = new StringBuffer("Case #" + i + ": " + numRecycle + "\n");
                output.write(outBuff.toString());
            }

        } finally {
            // Close the input stream
            in.close();
            output.close();
        }
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        String fileName = "input.in";
        try {
            processFile(fileName);
        } catch (IOException e) {
            // TODO Log error
        }
        return;
    }
}
