#include <bits/stdc++.h>
#define ll long long
#define faster ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define sp << " "
#define task ""
using namespace std;
ll t, n, aa=1e9, bb=1e9, cc=1e9, pw[10]={1};
pair<string, string> s[200005];
map<pair<string,string>,ll> mp;

bool check(ll a, ll b, ll c){
	mp.clear();
	for(ll i = 1; i <= n; i++){
		mp[make_pair(s[i].first.substr(0,min(a, (ll)s[i].first.size())),s[i].second.substr(0,min(b, (ll)s[i].second.size())))]++;
	}
	for(auto x:mp){
		if(x.second>=pw[c]) return false;
	}
	return true;
}

int main(){
	if(fopen(task".inp","r")){
		freopen(task".inp","r",stdin);
		freopen(task".out","w",stdout);
	}
	faster
	for(ll i = 1; i <= 9; i++) pw[i]=pw[i-1]*10;
	cin >> t;
	while(t--){
		cin >> n;
		aa=bb=0, cc=max(ceil(log10(n)), 1ll);
		for(ll i = 1; i <= n; i++) cin >> s[i].first >> s[i].second;
		for(ll a = 0; a <= 6; a++){
			for(ll b = 0; b <= 6; b++){
				for(ll c = 0; c <= 6; c++){	
					if(a+b+c<1) continue;
					if(a+b+c>6) continue;
					if(check(a, b, c)){
						if(a+b+c<aa+bb+cc){
							aa=a,bb=b,cc=c;
						}
					}
				}
			}
		}
		cout << aa sp << bb sp << cc << "\n";
	}
	return 0;
}

answer.code: In function ‘int main()’:
answer.code:32:32: error: no matching function for call to ‘max(double, long long int)’
   32 |                 aa=bb=0, cc=max(ceil(log10(n)), 1ll);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algobase.h:254:5: note: candidate: ‘template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)’
  254 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:254:5: note:   template argument deduction/substitution failed:
answer.code:32:32: note:   deduced conflicting types for parameter ‘const _Tp’ (‘double’ and ‘long long int’)
   32 |                 aa=bb=0, cc=max(ceil(log10(n)), 1ll);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1927,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algobase.h:300:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)’
  300 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:300:5: note:   template argument deduction/substitution failed:
answer.code:32:32: note:   deduced conflicting types for parameter ‘const _Tp’ (‘double’ and ‘long long int’)
   32 |                 aa=bb=0, cc=max(ceil(log10(n)), 1ll);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algo.h:3461:5: note: candidate: ‘template<class _Tp> constexpr _Tp std::max(std::initializer_list<_Tp>)’
 3461 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3461:5: note:   template argument deduction/substitution failed:
answer.code:32:32: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘double’
   32 |                 aa=bb=0, cc=max(ceil(log10(n)), 1ll);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from answer.code:1:
/usr/include/c++/11/bits/stl_algo.h:3467:5: note: candidate: ‘template<class _Tp, class _Compare> constexpr _Tp std::max(std::initializer_list<_Tp>, _Compare)’
 3467 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3467:5: note:   template argument deduction/substitution failed:
answer.code:32:32: note:   mismatched types ‘std::initializer_list<_Tp>’ and ‘double’
   32 |                 aa=bb=0, cc=max(ceil(log10(n)), 1ll);
      |                             ~~~^~~~~~~~~~~~~~~~~~~~~
answer.code:24:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   24 |                 freopen(task".inp","r",stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
answer.code:25:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   25 |                 freopen(task".out","w",stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~