#include<iostream>
#include<cstdio>
#include<cmath>
#define N 18
using namespace std;
int read()
{
    char c=0;
    int sum=0;
    while (c<'0'||c>'9') c=getchar();
    while ('0'<=c&&c<='9') sum=sum*10+c-'0',c=getchar();
    return sum;
}
int n,delta[N+1];
char c[N+1][1<<N];
int main()
{
    int cnt,rst,cnt2,d;
    n=read();
    for (int i=1;i<=n;++i)
	for (int j=0;j<(1<<(n-1));++j)
	{
	    cnt=cnt2=d=0;
	    for (int k=n;k>=1;--k)
		if (i!=k)
		    delta[k]=(j>>cnt)&1,cnt++;
	    cnt=cnt2=0;
	    for (int k=1;k<=n;++k)
		if (i!=k)
		{
		    if (!delta[k]) cnt++;
		    else cnt2++;
		}
	    if (cnt<cnt2)
	    {
		rst=i;
		for (int k=1;k<=n;++k)
		    if (i!=k&&!delta[k])
			rst+=k+(i<k);
	    }
	    else
	    {
		rst=i;
		for (int k=1;k<=n;++k)
		    if (i!=k&&delta[k])
			rst+=k+(i<k);
	    }
	    c[i][j]=(!(rst&1))?'B':'C';
	}
    for (int i=1;i<=n;++i)
    {
	for (int j=0;j<(1<<(n-1));++j) printf("%c",c[i][j]);
	puts("");
    }
    return 0;
}