#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ld=double;
using pll=pair<ll,ll>;
using vll=vector<ll>;
using vpll=vector<pll>;
using vvll=vector<vll>;
#define FOR(i,a,b) for(ll i=a;i<(ll)b;++i)
#define ROF(i,a,b) for(ll i=a;i>=(ll)b;--i)
#define F(n) FOR(i,0,n)
#define FF(n) FOR(j,0,n)
#define aa first
#define bb second
#define PB push_back

vector<vector<string>> D = {
  {":::",
   ":o:",
   ":::"},
  {"::o",
   ":::",
   "o::"},
  {"::o",
   ":o:",
   "o::"},
  {"o:o",
   ":::",
   "o:o"},
  {"o:o",
   ":o:",
   "o:o"},
  {"o:o",
   "o:o",
   "o:o"}};
vector<vector<string>> D2 = {
  {":::",
   ":o:",
   ":::"},
  {"o::",
   ":::",
   "::o"},
  {"o::",
   ":o:",
   "::o"},
  {"o:o",
   ":::",
   "o:o"},
  {"o:o",
   ":o:",
   "o:o"},
  {"ooo",
   ":::",
   "ooo"}};
int main(){
  ios::sync_with_stdio(0);
  vector<string> v(3);
  F(3) cin >> v[i];
  F(6) {
    bool ok = 1;
    FF(3) ok &= (v[j]==D[i][j]);
    if(ok) { cout << i+1 << endl; return 0; }
    ok =  1;
    FF(3) ok &= (v[j]==D2[i][j]);
    if(ok) { cout << i+1 << endl;  return 0;}
  }
  cout << "unknown" << endl; 
  return 0;
}