#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define pii pair<int,int>
#define piii tuple<int,int,int>
#define mp make_pair
#define mt make_tuple
#define x first
#define y second
#define fi first
#define se second
#define era erase
#define ins insert
#define it iterator2
#define lb lower_bound
#define ub upper_bound
#define exc(exp) if(exp)continue;
#define ret(exp) if(exp)return;
#define stop(exp) if(exp)break;
#define quit(sth) {sth;return;}
#define let(var...) int var;tie(var)
#define siz(vec) ((int)((vec).size()))
#define all(vec) (vec).begin(),(vec).end()
#define unq(vec) sort(all(vec)),(vec).erase(unique(all(vec)),(vec).end())
#define deb(var) cerr<<#var<<'='<<(var)<<"; "
#define debl(var) cerr<<#var<<'='<<(var)<<";\n"
#define inf (long long)(1e18)
void chkmax(int &x,int y){if(x<y)x=y;}
void chkmin(int &x,int y){if(x>y)x=y;}
const int mod=998244353;
void Add(int &x,int y){x=x+y<mod?x+y:x+y-mod;}
int qpow(int x,int y){
	int ans=1;for(;y;y>>=1,(x*=x)%=mod)if(y&1)(ans*=x)%=mod;return ans;
}

int n,U,rev[1<<18];
struct edges{
    int v,nxt;bool col;
}e[5400010];
int head[600010],cur[600010],deg[600010],tot=1;
void add(int u,int v){
    deg[u]++,deg[v]++;
    e[++tot]={v,head[u]},head[u]=tot;
    e[++tot]={u,head[v]},head[v]=tot;
}
void dfs(int u){
    while(cur[u]){
        if(e[cur[u]^1].col){
            cur[u]=e[cur[u]].nxt;exc(1);
        }
        int v=e[cur[u]].v;
        e[cur[u]].col=1;
        cur[u]=e[cur[u]].nxt;dfs(v);
    }
}
void work(){
    cin>>n,U=1<<n;
    for(int i=0;i<U;i++){
        rev[i]=(rev[i>>1]>>1)|((i&1)<<(n-1));
    }
    for(int i=0;i<n;i++){
        for(int S=0;S<U;S++){
            exc(rev[S]>>i&1);
            add(rev[S],U+(rev[S]^(1<<i)));
        }
    }
    for(int S=0;S<U+U;S++)
        if(deg[S]&1)add(U+U,S);
    memcpy(cur,head,sizeof cur);
    for(int S=0;S<=U+U;S++)dfs(S);
    tot=2;
    for(int i=0;i<n;i++){
        for(int S=0;S<U;S++){
            exc(rev[S]>>i&1);
            cout<<(e[tot].col?"C":"B"),tot+=2;
        }                           cout<<'\n';
    }
}
signed main(){
	ios::sync_with_stdio(0),
	cin.tie(0),cout.tie(0);
	int T=1;while(T--)work();
}
/*
 * CONTINUE, NON-STOPPING, FOR THE FAITH
 * START TYPING IF YOU DON'T KNOW WHAT TO DO
 * STOP TYPING IF YOU DON'T KNOW WHAT YOU'RE DOING
 */