#include <bits/stdc++.h> using namespace std; int main() { char c1; cin>>c1; int n=c1-'A'+1; for(int i=1; i<=n; i++){ char c2='A'+i-1; for (int j=1;j<=n-i;j++){

        cout<<" ";
    }
    for(int j=1; j<=2*i-1; j++){
        cout<<c2;
    }cout<<endl;
}
for(int i=1; i<=n-1; i++){
    char c3=c1-i;
    for (int j=1;j<=i;j++){

        cout<<" ";
    }
    for(int j=1; j<=2*n-2*i-1; j++){
        cout<<c3;
    }cout<<endl;
}





return 0;

}