#include <bits/stdc++.h>
using namespace std;
template <typename T>
inline T read(register T& t) {
  register T f = 1;
  register char ch = getchar();
  t = 0;
  while (ch < '0' || ch > '9') {
    if (ch == '-') f = -f;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') t = t * 10 + ch - '0', ch = getchar();
  t *= f;
  return t;
}
template <typename T, typename... Args>
inline void read(T& t, Args&... args) {
  read(t);
  read(args...);
}
const long long p = 998244353;
inline long long power(register long long x, register long long k = p - 2) {
  register long long re = 1;
  for (; k; k >>= 1, x = x * x % p)
    if (k & 1) re = re * x % p;
  return re;
}
int n;
vector<vector<int> > ans;
inline void print(vector<int> x) { ans.push_back(x); }
inline void print_f(vector<int> x) {
  printf("%d ", x.size());
  for (int i : x) printf("%d ", i);
  printf("\n");
}
int main() {
  read(n);
  if (n & 1) {
    print({1, 2, 3});
    print({1, 2, 3});
    for (int i = 5; i <= n; i += 2) {
      int s = i - 1, t = i;
      print({s, 1, t});
      print({s, 1, t});
      for (int j = 3; j < i; j += 2)
        print({s, j - 1, t, j}), print({s, j - 1, t, j});
    }
  } else {
    print({1, 2, 3});
    print({1, 2, 4});
    print({3, 4, 1});
    print({3, 4, 2});
    for (int i = 6; i <= n; i += 2) {
      int s = i - 1, t = i;
      print({s, 1, t});
      print({s, 2, t});
      print({s, 1, t, 2});
      for (int j = 4; j < i; j += 2)
        print({s, j - 1, t, j}), print({s, j - 1, t, j});
    }
  }
  printf("%d\n", ans.size());
  for (auto i : ans) print_f(i);
  return 0;
}
