# https://www.facebook.com/lakshay.gulati.5/posts/3439658002768650
# Subscribed by Lakshay

public class oddpattern {

    public static void main(String[] args) {
        int j,n=7;
        for(int i=0;i<4;i++){
            for (j = 1 ; j<=(n-(2*i));j++){
            System.out.print(" "+j);}
            System.out.println();
        }


        }
    }