DEBUG = true
MOD = 10**9+7

def main
    _N = int
    xs = [*1.._N]
    _N.times do |i|
        puts xs.join(" ")
    end
end

def int; gets.to_i; end
def ints; gets.split.map &:to_i; end
def string; gets.chomp; end
def rep(n, &b); n.times.map(&b); end
def yes; puts "Yes"; end
def no; puts "No"; end
def yesno t; t ? Yes : No; end
def debug(x); STDERR.puts x.inspect if DEBUG; end
def debug_grid(grid, size=8); grid.each { |row| STDERR.puts row.map { |x| x.inspect.ljust(size) }.join(" ") } if DEBUG; end

def factorial(n, mod); (2..n).inject(1) { |f, x| f * x % mod }; end
def cumsum(xs); ys = [0]; xs.each { |x| ys << x + ys[-1] }; ys; end
def cumdiff(ys); xs = []; xs.inject { |x, y| xs << (d = y - x); d }; end
def mod_inv(x, mod); x.pow(mod-2, mod); end
def mod_div(x, y, mod); x * mod_inv(y, mod) % mod; end

main