package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

package fixjava;

import java.util.Map;
import java.util.Map.Entry;

public class Join {

	// TODO: write a join-of-joins (2D join) that joins lists-of-lists without the complexity of using a lambda. 
	
	public static <T> String join(Iterable<T> list, String delim) {
		if (list == null)
			return null;
		StringBuilder buf = new StringBuilder();
		int idx = 0;
		for (T item : list) {
			if (idx++ > 0)
				buf.append(delim);
			buf.append(item.toString());
		}
		return buf.toString();
	}

	public static <T> String join(Iterable<T> list, String delim, Lambda<T, String> customToString) {
		if (list == null)
			return null;
		StringBuilder buf = new StringBuilder();
		int idx = 0;
		for (T item : list) {
			if (idx++ > 0)
				buf.append(delim);
			buf.append(customToString.apply(item));
		}
		return buf.toString();
	}

	public static <T> String join(T[] array, String delim) {
		if (array == null)
			return null;
		StringBuilder buf = new StringBuilder();
		for (int i = 0, n = array.length; i < n; i++) {
			if (i > 0)
				buf.append(delim);
			buf.append(array[i].toString());
		}
		return buf.toString();
	}

	public static <T> String join(int[] array, String delim) {
		if (array == null)
			return null;
		StringBuilder buf = new StringBuilder();
		for (int i = 0, n = array.length; i < n; i++) {
			if (i > 0)
				buf.append(delim);
			buf.append(array[i]);
		}
		return buf.toString();
	}

	public static <T> String join(float[] array, String delim) {
		if (array == null)
			return null;
		StringBuilder buf = new StringBuilder();
		for (int i = 0, n = array.length; i < n; i++) {
			if (i > 0)
				buf.append(delim);
			buf.append(array[i]);
		}
		return buf.toString();
	}

	public static <T> String join(double[] array, String delim) {
		if (array == null)
			return null;
		StringBuilder buf = new StringBuilder();
		for (int i = 0, n = array.length; i < n; i++) {
			if (i > 0)
				buf.append(delim);
			buf.append(array[i]);
		}
		return buf.toString();
	}

	public static <T> String join(char[] array, String delim) {
		if (array == null)
			return null;
		StringBuilder buf = new StringBuilder();
		for (int i = 0, n = array.length; i < n; i++) {
			if (i > 0)
				buf.append(delim);
			buf.append(array[i]);
		}
		return buf.toString();
	}

	public static <T> String join(Iterable<T> list) {
		return join(list, "");
	}

	public static <T> String join(T[] array) {
		return join(array, "");
	}

	public static <T> String join(Iterable<T> list, String delim, String prefix, String suffix) {
		return prefix + join(list, "") + suffix;
	}

	public static <T> String join(T[] array, String prefix, String suffix) {
		return prefix + join(array, "") + suffix;
	}

	/** Recursively join an Iterable that may optionally consist of Iterables.  If the items within the Iterable are of type Entry, they are joined as "key : value".  If value is an Iterable, it is recursed upon. */ 
	@SuppressWarnings("rawtypes")
	public static String joinRecursive(Iterable iterable, String delim, String prefix, String suffix) {
		if (iterable == null)
			return null;
		StringBuilder buf = new StringBuilder();
		buf.append(prefix);
		int idx = 0;
		for (Object item : iterable) {
			if (idx++ > 0)
				buf.append(delim);
			if (item instanceof Iterable) {
				buf.append(joinRecursive((Iterable) item, delim, prefix, suffix));
			} else if (item instanceof Entry) {
				Entry ent = (Entry) item;
				buf.append(ent.getKey().toString());
				buf.append(" : ");
				Object val = ent.getValue();
				if (val instanceof Iterable)
					buf.append(joinRecursive((Iterable) val, delim, prefix, suffix));
				else
					buf.append(val.toString());
			} else {
				buf.append(item.toString());
			}
		}
		buf.append(suffix);
		return buf.toString();
	}

	/** Join a map and recursively join values in the map */
	public static <K, V> String joinRecursive(Map<K, V> map, String delim, String prefix, String suffix) {
		return joinRecursive(map.entrySet(), delim, prefix, suffix);
	}
}
