import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.StringTokenizer;

public class Recycle
{

    static String shiftRight( String s )
    {
        String res = "" +  s.charAt( s.length() - 1 );
        res = res + s.substring( 0, s.length()-1 );

        return res;
    }

    static int solve( int a, int b )
    {
        HashSet<String> h = new HashSet();
        int res = 0;

        for( int i=a; i<=b; i++ )
        {
            String curr = Integer.toString(i);
            if( h.contains( curr ) )
                continue;

            // else compute number of shifts
            HashSet<String> temp = new HashSet();
            String s = curr;
            temp.add( curr );
            h.add( curr);

            for( int j=0; j<curr.length()-1; j++ )
            {
                s = shiftRight( s );

                // check for leading zeroes

                if( s.charAt(0) == '0')
                    continue;

                // check if valid range
                int x = Integer.parseInt( s );

                if( ( x>=a ) && (  x<=b ))
                {
                    temp.add(s);
                    h.add( s );
                }
            }

            // now count how many such pairs ( n choose 2 = n( n-1 )/2 )

            int k = temp.size();
            res += k*( k-1 )/2;

        }

        return res;

    }

    public static void main( String[] args ) throws IOException
    {
        FileWriter fr= new FileWriter("/home/gowri/Desktop/out.txt");
        BufferedWriter out = new BufferedWriter( fr );
        BufferedReader br = new BufferedReader( new InputStreamReader( System.in ));
        int t = Integer.parseInt( br.readLine() );
        StringTokenizer tok;

        for( int i=0; i<t; i++ )
        {
            String s = br.readLine();
            tok = new StringTokenizer( s );
            
            int A = Integer.parseInt( tok.nextToken() );
            int B = Integer.parseInt( tok.nextToken() );

            String res = String.format( "Case #%d: ", i+1 );
            out.write( res );
            out.write( Integer.toString(solve( A, B ) ));
            out.newLine();
        }

        out.close();


    }
}
