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 code.google.codejam;

import java.util.HashSet;



/**
 * @author sunilkumarp
 *
 */
public class RecycledNumbers extends Template {
	
	int A = 0;
	
	int B = 0;
	
	int digits = 0;
	
	int[] n = null;
	
	int m = 0;

	/* (non-Javadoc)
	 * @see code.google.codejam.Template#doSolveProblem()
	 */
	@Override
	protected Object doSolveProblem() throws Exception {
		if (A >= B) {
			return 0;
		}
		int result = 0;
		n = new int[digits];
		int counter = digits;
		int A_ = A;
		for (;--counter >= 0;) {
			n[counter] = A_ % 10;
			A_ = A_ / 10;
		}
		
		counter = B - A;
		for (int i = 0; i < counter; ++i) {
			HashSet<Integer> unique = new HashSet<Integer>();
			for (int j = 1; j < digits; ++j) {
				if (isGreaterThanA(j) && isLessOrEqThanB(j)) {
					if(unique.add(m)) {
						++result;
					} continue;
					
				}
			}
			incrementA();
		}
		return result;
	}

	private boolean isLessOrEqThanB(int j) {
		return m <= B;
	}
	
	private boolean isGreaterThanA(int j) {
		m = 0;
		for (int k = j; k < digits; ++k) {
			m *= 10;
			m += n[k];
		}
		
		for (int k = 0; k < j; ++k) {
			m *= 10;
			m += n[k];
		}
		
		int A_ = 0;
		for (int k = 0; k < digits; ++k) {
			A_ *= 10;
			A_ += n[k];
		}
		
		return m > A_;
	}
	
	/*private boolean isLessOrEqThanB(int j) {
		boolean notSwitched = true;
		for (int i = 0; i < digits; ++i) {
			if (notSwitched && i+j == digits) {
				j = -i;
				notSwitched = false;
			}
			if (b[i] > a[i+j]) {
				return true;
			} else if (b[i] < a[i+j]) {
				return false;
			}
		}
		return true;
	}

	private boolean isGreaterThanA(int j) {
		boolean notSwitched = true;
		for (int i = 0; i < digits; ++i) {
			if (notSwitched && i+j == digits) {
				j = -i;
				notSwitched = false;
			}
			if (a[i] > a[i+j]) {
				return false;
			} else if (a[i] < a[i+j]) {
				return true;
			}
		}
		return false;
	}*/

	private void incrementA() {
		for (int i = digits - 1; i >= 0; --i) {
			if ((n[i] += 1) == 10) {
				n[i] = 0;
			} else {
				break;
			}
		}
		
	}

	/* (non-Javadoc)
	 * @see code.google.codejam.Template#printInput()
	 */
	@Override
	protected void printInput() throws Exception {
		System.out.println("Digits-" +digits + ":" + A + "-" + B);

	}

	/* (non-Javadoc)
	 * @see code.google.codejam.Template#initializeTestCase()
	 */
	@Override
	protected void initializeTestCase() throws Exception {
		readLine();
		A = readNextInteger();
		digits = linePointer;
		B = readNextInteger();
	}

}
