import sys l=[] while True: line = sys.stdin.readline() if not line: break l.append(int(line)) for i in l: r=2*i-1 for j in range (1,r+1): t=j if t>i: t=2*i-t k=i-t for o in range (k): print(" ",end="") for o in range (1,t+1): print(o,end="") for o in range (t-1,0,-1): print(o,end="") print("")