n = int(input()) s = 0 lst1 = [] for i in range(n): lst = [] for j in range(1,i+2): s += 1 lst.append(s) lst1.append(lst) lst = [i[::-1] for i in lst1] lst4 = [] for i in range(n): lst3 = [] for j in lst: lst3.append("".join(map(str,(j[i:i+1])))) l = ".".join(lst3) lst4.append(l) s = lst4 for i in range(len(s)): for k in s[i].split("."): if k.isdigit(): print(k,end=" ") print()