#include <stdio.h>
 
void writeX(int n) {
     int i;
 
     for( i = 0; i < n; i++ ) {
          printf("X");
     }
     printf("\n");
}
 
void oyama(int m) {
    int i;
 
    for(i=1;i<=m;i++){
        writeX(i);
    }
    for(i=m-1;i>=1;i--){
        writeX(i);
    }
}
 
void figure(int n) {
    if(n==0)
       return;
    else{
        figure(n-1);
        oyama(n);
    }
}
 
int main(void) {
    int n;
 
    scanf("%d", &n);
    figure(n);
    return 0;
}

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