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 fixjava;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Set;
import java.util.Map.Entry;

public class HashMapDualKey<K1, K2, V> extends HashMap<K1, HashMap<K2, V>> {
	private static final long serialVersionUID = 1L;

	/** Returns whether the dual map contains the given key in the K1 space */
	@Override
	public boolean containsKey(Object key) {
		return this.containsKey(key);
	}

	public boolean containsKey(K1 key1, K2 key2) {
		HashMap<K2, V> map2 = this.get(key1);
		if (map2 == null)
			return false;
		else
			return map2.containsKey(key2);
	}

	/** Searches all (K1, K2) pairs to see if any of them map to the value. Runs in O(K1) time. */
	public boolean containsValueAll(Object value) {
		for (HashMap<K2, V> map2 : this.values())
			if (map2 != null && map2.containsValue(value))
				return true;
		return false;
	}

	public V get(K1 key1, K2 key2) {
		HashMap<K2, V> map2 = this.get(key1);
		if (map2 == null)
			return null;
		else
			return map2.get(key2);
	}

	public Set<K2> keySet(K1 key1) {
		HashMap<K2, V> map2 = this.get(key1);
		if (map2 == null)
			return null;
		else
			return map2.keySet();
	}

	public V put(K1 key1, K2 key2, V value) {
		HashMap<K2, V> map2 = this.get(key1);
		if (map2 == null)
			this.put(key1, map2 = new HashMap<K2, V>());
		return map2.put(key2, value);
	}

	public void putAll(ArrayList<Tuple3<? extends K1, ? extends K2, V>> items) {
		for (Tuple3<? extends K1, ? extends K2, V> item : items)
			put(item.getField0(), item.getField1(), item.getField2());
	}

	public void putAllListOfLists(ArrayList<Pair<? extends K1, ArrayList<Pair<? extends K2, V>>>> listOfLists) {
		for (Pair<? extends K1, ArrayList<Pair<? extends K2, V>>> pair1 : listOfLists) {
			K1 k1 = pair1.getLeft();
			for (Pair<? extends K2, V> pair2 : pair1.getRight())
				put(k1, pair2.getLeft(), pair2.getRight());
		}
	}

	@Override
	public HashMap<K2, V> remove(Object key1) {
		return this.remove(key1);
	}

	public V remove(K1 key1, K2 key2) {
		HashMap<K2, V> map2 = this.get(key1);
		if (map2 == null)
			return null;
		V ret = map2.remove(key2);
		if (map2.isEmpty())
			this.remove(key1);
		return ret;
	}

	/** Returns size across all (K1, K2) pairs. Runs in O(K1) time. */
	public int sizeAll() {
		int size = 0;
		for (HashMap<K2, V> map2 : this.values())
			if (map2 != null)
				size += map2.size();
		return size;
	}

	/** Returns union of values across all (K1, K2) pairs. Runs in O(N) time. */
	public HashSet<V> valuesAll() {
		HashSet<V> values = new HashSet<V>();
		for (HashMap<K2, V> map2 : this.values())
			if (map2 != null)
				values.addAll(map2.values());
		return values;
	}

	/** Returns the map as a list of Tuple3<K1, K2, V>. Runs in O(N) time. */
	public ArrayList<Tuple3<K1, K2, V>> getAsList() {
		ArrayList<Tuple3<K1, K2, V>> result = new ArrayList<Tuple3<K1,K2,V>>();
		for (Entry<K1, HashMap<K2, V>> ent1 : this.entrySet()) {
			K1 k1 = ent1.getKey();
			HashMap<K2, V> map2 = ent1.getValue();
			if (map2 != null) {
				for (Entry<K2, V> ent2 : map2.entrySet()) {
					K2 k2 = ent2.getKey();
					V v = ent2.getValue();
					result.add(Tuple3.make(k1, k2, v));
				}
			}
		}
		return result;
	}	

	/** Returns the map as a list of Pair<K1, ArrayList<Pair<K2, V>>>. Runs in O(N) time. */
	public ArrayList<Pair<K1, ArrayList<Pair<K2, V>>>> getAsListOfLists() {
		ArrayList<Pair<K1, ArrayList<Pair<K2, V>>>> result = new ArrayList<Pair<K1, ArrayList<Pair<K2, V>>>>(this.size());
		for (Entry<K1, HashMap<K2, V>> ent1 : this.entrySet()) {
			K1 k1 = ent1.getKey();
			HashMap<K2, V> map2 = ent1.getValue();
			if (map2 != null) {
				ArrayList<Pair<K2, V>> listOfK2VPairs = new ArrayList<Pair<K2,V>>(map2.size());
				for (Entry<K2, V> ent2 : map2.entrySet()) {
					K2 k2 = ent2.getKey();
					V v = ent2.getValue();
					listOfK2VPairs.add(Pair.make(k2, v));
				}
				result.add(Pair.make(k1, listOfK2VPairs));
			}
		}
		return result;
	}	
}
