n = int(input()) for i in range(1,n+1): a =[] for j in range(1,i+1): a.append(j) for j in range(i-1,0,-1): a.append(j) a =[str(ele) for ele in a] print(" "*(n-i) +''.join(a)) for i in range(n-1,0,-1): a =[] for j in range(1,i+1): a.append(j) for j in range(i-1,0,-1): a.append(j) a = [str(ele) for ele in a] print(" "*(n-i) +''.join(a))