#include <bits/stdc++.h>
#ifdef _DEBUG
#include "debug.hpp"
#else
#define debug(...)
#endif
#define fastIO (cin.tie(0), cout.tie(0), ios::sync_with_stdio(false))
#define precise(i) fixed << setprecision(i)
using ill = int64_t;
using ull = uint64_t;
using namespace std;

void solve() {
  string s;
  cin >> s;

  vector<int> pos_c;
  for (int i = 0; i < (int)s.size(); i++) {
    if (s[i] == 'c') pos_c.push_back(i);
  }

  if (pos_c.size() == 0) {
    cout << -1 << '\n';
    return;
  }

  int mindist = INT_MAX;
  for (const auto idx : pos_c) {
    int cnt_w = 0;
    for (int i = idx; i < (int)s.size(); i++) {
      if (s[i] == 'w') cnt_w++;
      if (cnt_w == 2) mindist = min(mindist, i - idx + 1);
    }
  }
  if (mindist == INT_MAX)
    cout << -1 << '\n';
  else
    cout << mindist << '\n';
}

void wrapper() {
  int loop;
  cin >> loop;
  for (int i = 0; i < loop; i++) {
    auto start = chrono::steady_clock::now();
    cout << "[TEST " << i + 1 << "]\n";
    solve();
    auto end = chrono::steady_clock::now();
    chrono::duration<double> elapsed = end - start;
    cout << "[elapsed : " << elapsed.count() << "]" << '\n';
  }
}

int main() {
  fastIO;
#ifdef _DEBUG
  wrapper();
#else
  solve();
#endif
}