#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define X first
#define Y second
#define SZ(a) ((int)a.size())
#define ALL(v) v.begin(), v.end()
#define pb push_back

int main() {
    ios::sync_with_stdio(0), cin.tie(0);
    int n;
    cin >> n;
    vector<pii> A, B;
    int x = 3; 
    for (int i = 1; i <= 5 || n % 4 != 0; i++, --n)
        A.pb({1, 1}), B.pb({1, 1});
    for (; n > 0; n -= 4, x += 3) {
        A.pb({x - 1, x + 1}); B.pb({x - 1, x + 1});
        A.pb({x, x}); B.pb({x, x + 1});
        A.pb({x, x}); B.pb({x, x});
        A.pb({x, x}); B.pb({x, x});
    }
    for (auto [x, y] : A)
        cout << x << " " << y << "\n";
    cout << "\n";
    for (auto [x, y] : B)
        cout << x << " " << y << "\n";
}