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;
	}

}

import java.util.Scanner;


public class Shift {
	public static void main(String[] args) {
		int a,b,c,d=10,e=0,x,T,j;
		int inf,sup,res=0;
		Scanner l = new Scanner(System.in);
		T=l.nextInt();
		for(j=0;j<T;j++){
			inf=l.nextInt();
			sup=l.nextInt();	
			res=0;
			for(int k=inf;k<=sup;k++){
				x=k;
				int vixi=k;
				c=0;
				e=0;
				while(vixi>0){
					vixi=vixi/10;
					e++;		
				}
				for(int i=0;i<e&&c!=k;i++){
					a=x%d;
					b=x/d;
					c= (a*(int)Math.pow(10, e-1)+b);
					if((c>k)&&(c<=sup)&&(c>=inf))
						res++;
					//System.out.println(c);
					x=c;
				}
			}
			System.out.println("Case #"+(j+1)+": "+res);
		}
	
	}
}
