local n = io.read("*n")
local offset = 0
for i = 1, n do
  for j = 1, n do
    local v = offset + j
    v = v % n
    if v == 0 then v = n end
    io.write(v)
    io.write(j == n and "\n" or " ")
  end
  offset = offset + 1
end