def main():
   
   N = int(input())
   
   ans = [[0] * N for i in range(N)]
   for i in range(N):
   	  s = i
   	  for j in range(N):
   	  	  ans[i][(s+j)%N] = j+1
   	  print(*ans[i])
   
if __name__ == '__main__':
    main()