#include <cstdio>
#include <iostream>
#include <pthread.h>
#include <stack>
#include <string>
#include <vector>

char getParen(const char &ch) {
  if (ch == ']') {
    return '[';
  } else if (ch == ')') {
    return '(';
  } else {
    return '{';
  }
}

int main(void) {
  std::string input;
  std::cin >> input;
  std::stack<char> st;
  bool ans[4] = {false, false, false, false};

  for (char ch : input) {
    // scan for errors
    // () [] {}
    if (ch == '(' || ch == '[' || ch == '{') {
      st.push(ch);
    } else if (ch == ')' || ch == ']' || ch == '}') {
      // check
      if (!st.empty() && st.top() == getParen(ch)) {
        // pop, nothing wrong
        st.pop();
      } else {
        if (ch == ')') {
          ans[1] = true;
        } else if (ch == ']') {
          ans[2] = true;
        } else {
          ans[3] = true;
        }
        ans[0] = true;
      }
    }
  }

  while (!st.empty()) {
    if (st.top() == '(') {
      ans[1] = true;
    } else if (st.top() == '[') {
      ans[2] = true;
    } else {
      ans[3] = true;
    }

    ans[0] = true;
    st.pop();
  }

  if (ans[0] == false) {
    printf("0");
  } else {
    for (int i = 1; i < 4; i++) {
      if (ans[i] == true) {
        printf("%d,", i);
      }
    }
  }

  return 0;
}